Maximum substring. Apr 11, 2023 · In this article, we will discuss the Leetcode Problem — ‘Longest Substring Without Repeating Characters. Can you solve this real interview question? Maximum Repeating Substring - For a string sequence, a string word is k-repeating if word concatenated k times is a substring of sequence. Can you solve this real interview question? Maximum Number of Occurrences of a Substring - Given a string s, return the maximum number of occurrences of any substring under the following rules: * The number of unique characters in the substring must be less than or equal to maxLetters. For example, in "assdssfssd", it is "ss" which repeats maximum number of times. Longest Substring with At Most Two Distinct Characters Description Given a string s, return the length of the longest substring that contains at most two distinct characters. A substring is defined as a contiguous sequence of one or more characters in the string. Mar 10, 2024 · Problem Formulation: The specific challenge discussed in this article is to identify the longest substring within a given string that contains exactly k unique characters. How can I limit strings to a maximum of 20 characters but not get an err In computer science, a longest common substring of two or more strings is a longest string that is a substring of all of them. Example 1: Input: s = "banana" Output: "ana Feb 14, 2025 · [Interesting Approach] - Using Recursion The idea is to recursively generate all possible substrings of the given string s. Can you solve this real interview question? Maximum Difference Between Even and Odd Frequency II - You are given a string s and an integer k. Mar 16, 2012 · Given a string S of length N find longest substring without repeating characters. We then use the lambda function max_substring to find the maximum consecutive occurrence of the substring in the input string test_str. Maximum Number of Occurrences of a Substring in Python, Java, C++ and more. This substring, by definition, must consist of consecutive characters from s without the same character appearing more than once. If a valid substring ends at i, we calculate and store the length of that substring in dp [i]. You can choose any character of the string and change it to any other uppercase English character. Vowel letters in English are 'a', 'e', 'i', 'o', and 'u'. Note: This is an excellent problem to learn problem solving and time complexity optimization using sliding window approach. ’ Given a string, the task is to find the length of the longest substring in the Can you solve this real interview question? Maximum Product of the Length of Two Palindromic Substrings - You are given a 0-indexed string s and are tasked with finding two non-intersecting palindromic substrings of odd length such that the product of their lengths is maximized. It is showing n-1 as output for number of As in a Sub-string of given string. suffix (i, j) stores the length of the longest common suffix between indices i and j, ensuring it doesn’t exceed j - i - 1 to avoid overlap. Other palindromes like "kssk" or Minimum Window Substring - Given two strings s and t of lengths m and n respectively, return the minimum window substring of s such that every character in t (including duplicates) is included in the window. So it basically broke down to finding the character having the maximum frequency. Return the length of the maximum length awesome substring of s. Input: s = "abcd" Output The lexicographically maximum substring is "bab". e. Start from the 0th index and for each index ind, add the current character s [ind] in the string cur, and add the string cur in res []. Example 1: Input: s = "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. Example 1: Input: s = "aababcaab Dec 18, 2008 · Given a string S, what is the best algorithm to find a substring which repeats maximum number of times. Take two variables ans and temp. But, "ab" has maximum length Input: str = "abcd" Output: a Approach: The idea is to store the frequency of each substring using a map and print the one with maximum frequency and maximum length. Example 1: Input: s = "eceba" Output: 3 Explanation: The substring is "ece" which its length is 3. Maximum Number of Occurrences of a Substring - Given a string s, return the maximum number of occurrences of any substring under the following rules: * The number of unique characters in the substring must be less than or equal to maxLetters. Given a string s, return the sum of beauty of all of its substrings. If there are multiple answers, then find the first appearing substring. Given a string s, return the maximum number of occurrences of any substring under the following rules: The number of unique characters in the substring must be less than or equal to maxLetters. If more than one string occurs maximum number of times, then print the lexicographically smallest substring. Maximum Repeating Substring - For a string sequence, a string word is k-repeating if word concatenated k times is a substring of sequence. That is, no letter appears in a single substring more than once. Jan 24, 2024 · Find the solution to the leetcode problem to find the longest substring without repeating characters with implementation in C++, Java and Python. , substring length) that has appeared so far that contains at most k distinct characters. * For example, the beauty of "abaacc" is 3 - 1 = 2. length <= 1000 * s consist of only digits and English letters. Can you solve this real interview question? Optimal Partition of String - Given a string s, partition the string into one or more substrings such that the characters in each substring are unique. Obviously 17 characters from the end you're now "Out of range". If no such substring exists, return an empty Dec 25, 2023 · It is a problem of finding the maximum substring length including two characters. The value of the character is defined in the following way Can you solve this real interview question? Maximum Number of Non-Overlapping Substrings - Given a string s of lowercase letters, you need to find the maximum number of non-empty substrings of s that meet the following conditions: 1. Note: If the length of the string is not a multiple of B and there are some characters left in the end consider them also as a substring. The occurrences may overlap. Longest Substring Without Repeating Characters - Given a string s, find the length of the longest substring without duplicate characters. Example 1: Input: s = "babad" Output: "bab" Explanation: "aba" is also a valid answer. Note: The Longest Palindromic Subsequence (LPS) is the maximum-length subsequence of a given string that is also a Palindrome. The last successful k is returned as the maximum repeating value. Can you solve this real interview question? Longest Duplicate Substring - Given a string s, consider all duplicated substrings: (contiguous) substrings of s that occur 2 or more times. substring(0, maxLength); If you want your integers and doubles to have a certain length then I suggest you use NumberFormat to format your numbers instead of cutting off their string representation. Can you solve this real interview question? Maximum Length of a Concatenated String with Unique Characters - You are given an array of strings arr. Jul 23, 2025 · Given string str consisting of lowercase letters, the task is to find the maximum number of non-overlapping substrings such that each substring contains all occurrences of its characters from the entire string. Can you solve this real interview question? Longest Palindromic Substring - Given a string s, return the longest palindromic substring in s. Like most algorithms, there's many ways to solve this problem, but today I'll be solving it using the "expand around the center Jul 14, 2016 · A substring can be of length 1,2,3 The question that I was trying to solve involved finding the substring that occurred the maximum number of times. Max(maxLen, len) to ensure that maxLen holds the maximum length found so far. Example 2: Inp Jan 19, 2016 · That's because Substring(17, lensub) means start at the 17th character and then move forward the same number of spaces as the full length of the string. String multiplication and substring check: In the first iteration, k is 6, so we multiply "abb" by 6. The substring is a continuous subpart of the string and we need to return the largest substring which has all unique characters. This segment or substring must be minimized in length and must contain each character from t at least as many times as it appears in t. Follow the steps below to solve the problem: Initialize a Set S. This can have application in DNA sequencing in Biology and other application. y], either j < x or i > y is true. The problem listed below: Given an integer array nums, find the Return the maximum length of a substring of s that can be changed to be the same as the corresponding substring of t with a cost less than or equal to maxCost. Feb 11, 2024 · This is also an medium level problem in which we’ve to find the maximum sum of the substring existed in the original string. Oct 13, 2023 · Finally, after the inner loop, we calculate the length of the current substring (len) and update the maxLen variable. Example 1: Input: s = ”abcabcbb” Output: 3 Explanation: The answer is abc with length of 3. Applications include data deduplication and plagiarism detection. Find Maximum Number of Non Intersecting Substrings - You are given a string word. The length of the current unique character substring can be calculated by taking the difference of the end and start pointers j - i and adding 1 (since the length is the difference between the indexes plus one). Can you solve this real interview question? Longest Substring with At Least K Repeating Characters - Given a string s and an integer k, return the length of the longest substring of s such that the frequency of each character in this substring is greater than or equal to k. To check if the substring can can be converted to all same characters, we find the most frequent character. Select a set of non-overlapping substrings from the string s that satisfy the following conditions: * The length of each substring is at least k. Return the minimum number of substrings in such a partition. Problem Constraints 1 <= |A| <= 105 Ai = {'a Jun 23, 2021 · JAVA Please Help me with the code. Example 2: Input: s = "leetcode" Output: "tcode" Constraints: * 1 <= s. vis [0] checks for 'a', vis [1] checks for 'b', vis [2] checks for 'c' and so on. Jul 15, 2025 · Given a string str, the task is to find the substring of length K which occurs the maximum number of times. For instance, in the string "aabbcc", the longest substring with 2 unique characters is either "aabb" or "bbcc", both of which have a length of 4. We use Math. Example 1: Input: s = "abciiidef", k = 3 Output: 3 Explanation: The substring "iii" contains 3 vowel letters. Example 3: Input: nums = [5,4,-1 Can you solve this real interview question? Number of Substrings Containing All Three Characters - Given a string s consisting only of characters a, b and c. LeetCode Solutions in C++23, Java, Python, MySQL, and TypeScript. inputString = inputString. The primary data structure involved is a string that is built up iteratively, and the algorithmic technique is greedy iterative search with substring Count Vowel Substrings of a String - A substring is a contiguous (non-empty) sequence of characters within a string. It can be solved using sliding window and hash. Feb 11, 2025 · The idea is to solve this problem using dynamic programming (DP) where dp [i] represents the length of the longest valid parentheses substring ending at index i. * Remove substring "ab" and gain x points. 6 days ago · Given a string s, find the longest substring which is a palindrome. Example 1: Input: nums = [-2,1,-3,4,-1,2,1,-5,4] Output: 6 Explanation: The subarray [4,-1,2,1] has the largest sum 6. If the end argument is not specified then the substring will end at the end of the string. Time… Jun 8, 2020 · A substring is a continuous series of characters in a string--for example, "flow" is a substring of "flower". If there is no substring from s that can be changed to its corresponding substring from t, return 0. Alice is organizing a game for her numFriends friends. Given a binary string s s of length n n, find the maximum cost across all its non-empty substrings. Input: str = "aba" Output: 2 Approach: The problem can be solved by the Greedy approach. Perfect for coding interviews and improving your algorithm skills. For every substring, we compare it with the current result and update the result if needed Maximum Length Substring With Two Occurrences - Given a string s, return the maximum length of a substring such that it contains at most two occurrences of each character. Substring(0,20) This works but not if LongTitle has a length of less than 20. Substring With Largest Variance - The variance of a string is defined as the largest difference between the number of occurrences of any 2 characters present in the string. Full-Form: Substring is a portmanteau of "sub" and "string Dec 5, 2021 · 📌 The problem statement Given a string s, find the length of the longest substring without repeating characters. Aug 28, 2024 · The "Longest Repeated Substring" problem is a well-known computer science challenge determining the longest substring that appears more than once in a given Jan 3, 2024 · The Problem: Given a string s, find the length of the longest substring without repeating characters. This problem is common in various applications, including text processing and search algorithms. Each time the sliding window moves right by one position. In-depth solution and explanation for LeetCode 5. Example 1: Input: s = "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. In-depth solution and explanation for LeetCode 159. We help companies accurately assess, interview, and hire top developers for a myriad of roles. Jun 19, 2019 · Welcome to Subscribe On Youtube 1297. Return the number of substrings containing at least one occurrence of all these characters a, b and c. Hi can someone share the approach to find lexicographically largest substring in a string? I know the answer will always be one of the suffixes but cannot find a way to analyze those suffixes efficiently. * For example, when removing "ba" from A substring that contains a certain character c must also contain all occurrences of c. Longest Substring with At Least K Repeating Characters in Python, Java, C++ and more. Jun 5, 2025 · Problem Statement The task is to determine the length of the longest substring of a given string s that does not contain any repeated characters. Your task is to find the maximum difference between the frequency of two characters, freq [a] - freq [b], in a substring subs of s, such that: * subs has a size of at least k. DP 27. Example 1: Input: s = "aabcb" Output: 5 Explanation: The substrings with non-zero Jul 23, 2025 · The idea is to scan the string from left to right, keep track of the maximum length Non-Repeating Character Substring seen so far in res. * For example, when removing "ab" from "cabxbae" it becomes "cxbae". Start from k = 1 and increment k until the concatenated string does not appear in sequence. * The substring size must be between minSize and maxSize inclusive. We mainly find longest common suffix. Can you solve this real interview question? Maximum Binary String After Change - You are given a binary string binary consisting of only 0's or 1's. † † A string a a is a substring of a string b b if a a can be obtained from b b by deletion of several (possibly, zero or all) characters from the beginning and several (possibly, zero or all) characters from the end. Divide the string into substrings of length B. A binary string is a string consisting only of the characters 0 and 1. For some non-empty substring † t of string s containing x characters 0 and y characters 1, define its cost as: x⋅ y , if x> 0 and y> 0 ; x2 , if x> 0 and y = 0 ; y2 , if x = 0 and y> 0 . Lexicographical Maximum substring of string | GeeksforGeeks GeeksforGeeks 997K subscribers Subscribed Longest Substring Without Repeating Characters - Given a string s, find the length of the longest substring without duplicate characters. For example : for the string W='aaab' we have S= {'a','aa','aaa','ab','aab','aaab','b'} You will be given N queries each specifying an integer K. Given a binary string s of length n , find the maximum cost across all its non-empty substrings As we expand and contract the window, we keep a record of the maximum window size (i. HackerEarth is a global hub of 5M+ developers. Can you solve this real interview question? Longest Substring with At Most K Distinct Characters - Level up your coding skills and quickly land a job. The cost of an empty string is considered 0. Let S denote the set of all unique substrings that can be formed from the String W. Jan 26, 2024 · Learn how to efficiently find the longest substring without repeating characters using the sliding window technique with code examples in Javascript. May 7, 2016 · Welcome to Subscribe On Youtube159. Definition and Usage The substring() method returns a substring from the string. InterviewBit solutions in C++. The vowels in English are defined as 'a', 'e', 'i', 'o', and 'u'. Example 1: Input: s = "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length Can you solve this real interview question? Maximum Number of Non-overlapping Palindrome Substrings - You are given a string s and a positive integer k. A subsequence of a string is a new string generated from the original string with some characters (can be none) deleted without changing the relative order of the remaining characters You are given a String W. Our goal is to find an efficient solution to this problem using Python Can you solve this real interview question? Longest Palindromic Substring - Given a string s, return the longest palindromic substring in s. Can you solve this real interview question? Find the Substring With Maximum Cost - You are given a string s, a string chars of distinct characters and an integer array vals of the same length as chars. These occurrences can overlap. Can you solve this real interview question? Maximum Subarray - Given an integer array nums, find the subarray with the largest sum, and return its sum. This problem is a variant of the classical maximum subarray sum problem (also known as Kadane's algorithm), where instead of finding a subarray with a maximum sum in an integer array, the objective is to find a substring with the maximum cost in a string with custom-defined character values. 35K subscribers 318 views 2 years ago Can you solve this real interview question? Longest Substring of One Repeating Character - You are given a 0-indexed string s. It isn't, so we continue the loop with k decremented Given a string s, find the length of the longest substring without duplicate characters. Example: Input: "stackoverflow" Output: "stackoverfl" If there are two such candidates, return first from left Can you solve this real interview question? Longest Repeating Character Replacement - You are given a string s and an integer k. A substring is a contiguous sequence of characters in a string Jul 23, 2025 · 1. Return the maximum possible length of s. Find the maximum number of substrings that meet the above conditions. The number of distinct characters in any substring can be efficiently computed using differences in the prefix table. A substring is any continuous sequence of characters in the string. If there is no such substring return -1. Maximum Substring - Problem Description Given a string A consisting of only characters 'a' and 'b'. 1K Jul 1, 2025 · For each starting index, it performs a binary search to find the farthest end index such that the substring contains exactly k unique characters. We check if "abbabbabbabbabbabb" (word * k) is a substring of the sequence "aabbabbabbaabbaabb". You can apply each of the following operations any number of times: * Operation 1: If the number contains the substring "00", you can replace it with "10". If there are multiple valid substrings of the same minimum length, return the one that appears first in s1. Example 1: Input: s = " LeetCode Solutions in C++23, Java, Python, MySQL, and TypeScript. The characters of s2 must appear in the same sequence within the substring of s1. You can perform two types of operations any number of times. However, I found out that I can find the longest repeating substring using suffix tree in O (n). Intuitions, example walk through, and complexity analysis. * For example, "00010" -> "10010" * Operation 2: If the number contains the substring "10 Can you solve this real interview question? Find the Lexicographically Largest String From the Box I - You are given a string word, and an integer numFriends. Return the max sliding window. Example 2: Input: s = "ccaabbb" Output: 5 Explanation: The substring is "aabbb" which Jul 23, 2025 · Therefore, the maximum count of unique substrings is 5. It might sound a bit complicated, but don Feb 8, 2023 · Given a string, find the maximum length contiguous substring of it that is also a palindrome. Jul 29, 2023 · Hey there! Today, we’ll dive into a fascinating problem: finding the length of the longest substring in a given string without any repeating characters. Can you solve this real interview question? Longest Common Subsequence - Given two strings text1 and text2, return the length of their longest common subsequence. Jul 23, 2025 · Given a string s, find the length of the Longest Palindromic Subsequence in it. Iterate over the characters of the string str and for each i and find the substring up to that index. if no such substring exists, return 0. If the current element is the same as the previous element then increment temp. j] and s[x. You can only see the k numbers in the window. Follow the steps below to solve the problem: LeetCode Solutions in C++23, Java, Python, MySQL, and TypeScript. Return the length of the longest substring containing the same letter you can get after performing the above operations Can you solve this real interview question? Maximum Score From Removing Substrings - You are given a string s and two integers x and y. If there are multiple solutions with the same number of substrings, return the one with minimum total length. The ith query updates the character in s at index queryIndices[i] to the character Jan 31, 2024 · At each iteration, the code calculates the length of the current substring (i - start) and updates maxLen to be the maximum of its current value and the calculated length. * Each substring is a palindrome. Example 1: Input: s = "3242415" Output: 5 Explanation: "24241" is the longest awesome substring, we can form the palindrome "24142" with some swaps. Return the maximum number of non-intersecting substrings of word that are at least four characters long and start and end with the same letter. You can perform this operation at most k times. The approach uses a sliding window technique and a set to efficiently check for vowels in the substring. Nov 24, 2024 · In this blog post (and YouTube video), we’ll embark on a journey to solve a classic LeetCode problem: finding the length of the longest substring without repeating characters. Description Given a string s, return the maximum length of a substring such that it contains at most two occurrences of each character. The lexicographically maximum substring is "bab". Example 2: Input: s = "cbbd" Output: "bb" Constraints: * 1 <= s. If yes, then update the result if its length is more. Solution We iteratively check if the word repeated k times is a substring of sequence. This is the best place to expand your knowledge and get prepared for your next interview. Longest Palindromic Subsequence Examples: Input: s = "bbabcbcab" Output: 7 Explanation: Subsequence "babcbab" is the longest subsequence which is also a palindrome. If the current Problem Description The problem requires us to find the smallest segment (substring) from string s that contains all the characters from string t, including duplicates. For example, the longest palindromic substring of "bananas" is "anana", and the longest palindromic substring of "abdcbcdbdcbbc" is "bdcbcdb". You are given a binary string s . Jun 6, 2025 · I’m going to break down LeetCode #1456: Maximum Number of Vowels in a Substring of Given Length and show you exactly why this medium-level problem is actually your gateway to mastering one of Nov 16, 2024 · The maximum value of suffix (i, j) provides the length of the longest repeating substring and the substring itself can be found using the length and the starting index of the common suffix. The substring size must be between minSize and maxSize inclusive. Feb 4, 2011 · By substring, do you mean contiguous characters, or just some number of characters drawn in order? In other words, is "AL" a substring of "APPLE"? Your task is to find the smallest substring in s1 such that s2 appears as a subsequence within that substring. Example 1: Input: s = "aababcaab May 25, 2022 · Given a string s of size N. May 8, 2023 · In this method, we define a lambda function called max_substring that takes two arguments, a string s and a substring sub, and returns the maximum consecutive occurrence of the substring in the string. Can you solve this real interview question? Split a String Into the Max Number of Unique Substrings - Given a string s, return the maximum number of unique substrings that the given string can be split into. This problem is asking you to find the longest substring which is a palindrome in a given string. Understanding the maximum length of such a substring in any given string helps in various applications like data Mar 21, 2023 · After the inner loop is finished, the function updates the maximum length “maxlen” by computing the length of the current substring “r-l+1”, and compares it to the current maximum length. Return s after removing all occurrences of part. . The cost of the substring is the sum of the values of each character in the substring. May 8, 2023 · Sometimes, while working with Python strings, we can have a problem in which we need to check for maximum occurring substring from strings list. Return any duplicated substring that has the longest possible length. Example 2: Jun 12, 2025 · The provided C++ solution aims to find the maximum number of vowels in any substring of a given length from a provided string. Maximum Number of Vowels in a Substring of Given Length - Given a string s and an integer k, return the maximum number of vowel letters in any substring of s with length k. Sep 30, 2024 · Below is a recursive version of the above solution, we write a recursive method to find the maximum length substring ending with given pair of indexes. Your have to find the length of lexicographically Problem Description The problem asks for the maximum number of vowel letters that can be found in any substring of a given string s with a fixed length k. The task is to find the maximum occurred substring with a maximum length. While traversing the string, check whether the current character is present in the hash table or not. For example, if s is "banana" and k is 3, we need to find the substring of length 3 that has the most Apr 23, 2025 · The variable st stores the starting point of the current substring, maxlen stores the length of maximum length substring, and start stores the starting index of maximum length substring. * Remove substring "ba" and gain y points. The task is to find the largest substring which consists of the same characters Examples: Input : s = "abcdddddeff" Output : 5 Substring is "ddddd" Input : s = aabceebeee Output : 3 Approach : Traverse through the string from left to right. If there is no common subsequence, return 0. Nov 6, 2022 · Codeforces 1750B Solution | Maximum Substring Coding Dynamo 3. An awesome substring is a non-empty substring of s such that we can make any number of swaps in order to make it a palindrome. We’ll explore Can you solve this real interview question? Maximum Number of Non-overlapping Palindrome Substrings - You are given a string s and a positive integer k. Prepare for your technical interviews by solving questions that are asked in interviews of various companies. Longest Palindromic Substring in Python, Java, C++ and more. If there is no such substring, return the empty string "". You can split string s into any list of non-empty substrings, where the concatenation of the substrings forms the original string. Find the subtring with maximum count of 'a' and return the count. Given a string word, return the number of vowel substrings in word. If s does not have a duplicated substring, the answer is "". For example, consider a string "AAABBBBBAAAAAA", in this string max number Aug 17, 2022 · Given a string s we have to find the lexicographical maximum substring of a string Examples: Input : s = "ababaa" Output : babaa Explanation : "babaa" is the maximum lexicographic substring formed from this string Input : s = "asdfaa" Output : sdfaa The idea is simple, we traverse through all substrings. A string s is formed by the concatenation of a subsequence of arr that has unique characters. The substrings do not overlap, that is for any two substrings s[i. Contribute to KshitizzB/InterviewBit-Solutions development by creating an account on GitHub. Maximum Score After Splitting a String - Given a string s of zeros and ones, return the maximum score after splitting the string into two non-empty substrings (i. Can you solve this real interview question? Largest Substring Between Two Equal Characters - Given a string s, return the length of the longest substring between two equal characters, excluding the two characters. Mar 20, 2025 · To find the length of the longest substring with distinct characters starting from an index, we create a new visited array of size = 26 to keep track of included characters in the substring. Definition and Full Form of Substring Definition: A substring is a contiguous sequence of characters within a larger string. Examples: Input: s = "forgeeksskeegfor" Output: "geeksskeeg" Explanation: The longest substring that reads the same forward and backward is "geeksskeeg". Example 2: Input: nums = [1] Output: 1 Explanation: The subarray [1] has the largest sum 1. There are multiple rounds in the game, where in each round: * word is split into numFriends non-empty strings, such that no previous round has had the exact same split. You are also given a 0-indexed string queryCharacters of length k and a 0-indexed array of integer indices queryIndices of length k, both of which are used to describe k queries. Examples: Input: str = "abab" Output: ab "a", "b", "ab" are occur 2 times. Example: Input: s = "abcabcb" Output: 3 Explanation: The answer is "abc", with Can you solve this real interview question? Sum of Beauty of All Substrings - The beauty of a string is the difference in frequencies between the most frequent and least frequent characters. 2. left substring and right substring). Then Jul 23, 2025 · The idea is to scan the string from left to right, keep track of the maximum length Non-Repeating Character Substring seen so far in res. Dec 24, 2022 · Given a String, find the length of longest substring without any repeating character. Example 1: Input: s = "bcbbbcba" Output: 4 Explanation: The following substring has a length of 4 and contains at most two occurrences of each character: "bcbbbcba". The word's maximum k-repeating value is the highest value k where word is k-repeating in sequence. To do so, create an array of string res [] to store the substrings of string s and an empty string cur to store the current string. Note the two characters may or may not be the same. A subsequence is an array that can be derived from another array by deleting some or no elements without changing Maximum Substring - Problem Description Given a string A consisting of only characters 'a' and 'b'. Example 1: Input: s = "aababcaab . Given a string s consisting of lowercase English letters only, return the largest variance possible among all substrings Maximum Number of Vowels in a Substring of Given Length - Given a string s and an integer k, return the maximum number of vowel letters in any substring of s with length k. A substring is a contiguous sequence of characters within a string. Better than official and forum solutions. Example 1: Input: s = "abcabc" Output: 10 Explanation: The substrings containing at least one occurrence of the characters a, b and c Maximum Length Substring With Two Occurrences - Given a string s, return the maximum length of a substring such that it contains at most two occurrences of each character. During this process, we always keep track of the maximum length of the substring found that meets the condition. The score after splitting a string is the number of zeros in the left substring plus the number of ones in the right substring. Finding the maximum matching substring within a given string involves identifying the longest contiguous segment of characters that matches certain criteria, such as another string or a pattern. Longest Substring with At Most Two Distinct Characters in Python, Java, C++ and more. Note that each character should belong to exactly one substring in a In-depth solution and explanation for LeetCode 395. length <= 4 * 105 * s contains only lowercase English letters. Maximum Number of Occurrences of a Substring Description Given a string s, return the maximum number of occurrences of any substring under the following rules: The number of unique characters in the substring must be less than or equal to maxLetters. It is essentially a smaller portion of a string extracted from the original string. Can you solve this real interview question? Remove All Occurrences of a Substring - Given two strings s and part, perform the following operation on s until all occurrences of the substring part are removed: * Find the leftmost occurrence of the substring part and remove it from s. In-depth solution and explanation for LeetCode 1297. Jun 16, 2025 · Naive Solution - O (n^3) Time Consider every susbtring and find if it can have all characters same with K changes. Below is a detailed approach to solving this problem using string manipulation techniques. There may be more than one longest common substring. * All the Given a string S, write a program to find the length of longest substring without repeating characters. Below Longest Substring Without Repeating Characters - Given a string s, find the length of the longest substring without duplicate characters. Longest Common Substring | DP on Strings 🔥 take U forward 859K subscribers 8. Jul 23, 2025 · The idea is to scan the string from left to right, keep track of the maximum length Non-Repeating Character Substring seen so far in res. Jun 22, 2013 · I tried the following: var Title = LongTitle. When we traverse the string, to know the length of current window we need two indexes. If word is not a substring of sequence, word's maximum k-repeating value is 0. A vowel substring is a substring that only consists of vowels ('a', 'e', 'i', 'o', and 'u') and has all five vowels present in it. A substring that contains a certain character Can you solve this real interview question? Sliding Window Maximum - You are given an array of integers nums, there is a sliding window of size k which is moving from the very left of the array to the very right. The testcases will be generated such that the answer is unique. Jul 23, 2025 · Length of longest substring having all characters as K Maximum length palindromic substring such that it starts and ends with given char Find distinct characters in distinct substrings of a string Count all substrings having character K Reverse the given string in the range [L, R] Number of substrings that start with “geeks” and Iterate from the maximum possible value of k down to 0: We start a for loop from 6 down to 1. Given strings sequence and word Jul 11, 2025 · Given a string. Substrings are often used for various text manipulation tasks, including searching, comparing, and extracting data. bmb bdimkej fisms nbyy lyq vnxsse kbin ueifg cmuhoum zkhwx
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