The testcases will be generated such that the answer is unique.. A substring is a contiguous sequence of characters within the string. Longest Substring Without Repeating Characters. Given an integer array nums, return the number of longest increasing subsequences.. Notice that the sequence has to be strictly increasing.. Given two strings text1 and text2, return Given two strings text1 and text2, return the length of their longest common subsequence.If there is no common subsequence, return 0.. 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.. For example, "ace" is a subsequence of "abcde". Easy #10 Regular Expression Matching. Example 2: Input: s Show Hint 2. LeetCode is hiring! Given two strings a and b, return the length of the longest uncommon subsequence between a and b.If the longest uncommon subsequence does not exist, return -1.. An uncommon subsequence between two strings is a string that is a subsequence of one but not the other.. A subsequence of a string s is a string that can be obtained after deleting any number of Given an array nums of integers, return the length of the longest arithmetic subsequence in nums.. Recall that a subsequence of an array nums is a list nums[i 1], nums[i 2], , nums[i k] with 0 <= i 1 < i 2 < < i k <= nums.length - 1, and that a sequence seq is arithmetic if seq[i+1] - seq[i] are all the same value (for 0 <= i < seq.length - 1).. 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.If there is no such substring, return the empty string "".. Even though [1,3,5,7] is an increasing subsequence, it is not continuous as elements 5 and 7 are separated by element 4. Medium #13 Roman to Sort binary array in linear time Find a duplicate element in a limited range array Find largest sub-array formed by consecutive integers Find maximum length sub-array having given sum Find maximum length sub-array having equal number of 0s and 1s Sort an array containing 0s, 1s and 2s(Dutch Given a string s, return the longest palindromic substring in s. A string is called a palindrome string if the reverse of that string is the same as the original string. Constraints: 1 <= s.length <= 1000 Given two strings s and t, return the number of distinct subsequences of s which equals t. A string's subsequence is a new string formed from the original string by deleting some #5 Longest Palindromic Substring. LeetCode is hiring! For example, [2,7,4] is a subsequence of [4,2,3,7,2,1,4] (the underlined Medium. #10 Regular Expression Matching. Medium #12 Integer to Roman. Medium #8 String to Integer (atoi) Medium #9 Palindrome Number. Given a string s, find the longest palindromic subsequence's length in s.. A subsequence is a sequence that can be derived from another sequence by deleting some or no elements without changing the order of the remaining elements.. You may not move diagonally or move outside the boundary (i.e., wrap-around is not allowed). The length of this subsequence is 6, so 6 is returned. Easy. LeetCode is hiring! Medium #7 Reverse Integer. Example 1: Input: nums = [10,9,2,5,3,7,101,18] Output: 4 Medium #8 String to Integer (atoi) Medium #9 Palindrome Number. Example 2: Input: nums = [1] Output: 1 Example 3: Input: nums = [5,4,-1,7,8] Output: 23 Constraints: 1 <= nums.length <= 10 5-10 4 <= nums[i] <= 10 4; Follow up: If you have figured Notice that the answer must be a substring, "pwke" is a subsequence and not a substring. Longest Palindromic Subsequence. Thus, we return [2,3]. Easy #10 Regular Expression Matching. Example 1: Input: s = "abcabcbb" Output with the length of 3. Think of LIS it's kind of close #5 Longest Palindromic Substring. Medium #6 Zigzag Conversion. Given a string s, return the longest palindromic substring in s. A string is called a palindrome string if the reverse of that string is the same as the original string. A common subsequence of two strings is a subsequence that is common to both strings. Constraints: 1 <= s.length <= 10 5; s consists of lowercase English letters. The longest substring consisting of one repeating character is "aaa" with length 3. Given an integer array nums, return the length of the longest strictly increasing subsequence. For example, [3,6,2,7] is a subsequence of the array [0,3,1,6,2,2,7]. Longest Palindromic Subsequence. For example, [3,6,2,7] is a subsequence of the array [0,3,1,6,2,2,7]. Apply NOW. #3 Longest Substring Without Repeating Characters. Think the opposite direction instead of minimum elements to remove the maximum mountain subsequence. You are given a string s of length n, and an integer k.You are tasked to find the longest subsequence repeated k times in string s.. A subsequence is a string that can be derived from another string by deleting some or no characters without changing the order of the remaining characters.. A subsequence seq is repeated k times in the string s if seq * k is a Hard #5 Longest Palindromic Substring. Find pair with given sum in the array. Medium. The longest substring consisting of one repeating character is "zz" with length 2. The length of this subsequence is 5, so 5 is returned. Return the largest sum of the given array after partitioning.Test cases are generated so that the answer fits in a 32-bit integer.. 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.If there is no such substring, return the empty string "".. Count Special Quadruplets. Medium #46 Permutations. Medium. 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.If there is no such substring, return the empty string "".. Medium #7 Reverse Integer. Example 2: Input: s = "cbbd" Output: "bb" Constraints: 1 <= s.length <= 1000 Some people will be tempted to come up with a quick solution, which is unfortunately flawed (however can be corrected easily): Reverse S S S and become S S' S . Show Hint 1. Find the longest common substring between S S S and S S' S , which must also be the longest palindromic substring. Longest Increasing Subsequence. Constraints: 0 <= s.length <= 5 * 10 4; s consists of English letters #10 Regular Expression Matching. Note that it must be strictly increasing. Common mistake. The subsequence is strictly increasing and; The difference between adjacent elements in the subsequence is at most k. Return the length of the longest subsequence that meets the requirements. Longest Increasing Subsequence. A subsequence of an array is a new array generated from the original array by deleting some elements (possibly none) without changing the remaining elements' relative order. LeetCode is hiring! (i.e., "ace" is a subsequence of "abcde" Among all the substrings that satisfy the given condition, return the length of the longest substring. Easy #10 Regular Expression Matching. Find pair with given sum in the array. Example 1: Input: nums = [10,9,2,5,3,7,101,18] Output: 4 Apply NOW. 179 Add to List Share. Medium #7 Reverse Integer. Hard #11 Container With Most Water. LeetCode is hiring! Hard #11 Container With Most Water. 30028 1280 with the length of 3. Array. Hard #11 Container With Most Water. Given a string s, find the length of the longest substring without repeating characters. Easy. We define that a subsequence a is more competitive than a subsequence b (of the same length) if in the first position where a and b differ, Medium #12 Integer to Roman. Medium #6 Zigzag Conversion. Given an integer array nums, find the subarray which has the largest sum and return its sum.. Medium #44 Wildcard Matching. A substring is a contiguous sequence of characters within the string. Example 2: Input: s Medium. Example 1: Input: s = "babad" Output: "bab" Explanation: "aba" is also a valid answer. Count Good Triplets in an Array #5 Longest Palindromic Substring. Find sub-array with 0 sum. Example 1: Input: nums = [-2,1,-3,4,-1,2,1,-5,4] Output: 6 Explanation: [4,-1,2,1] has the largest sum = 6. Intuition. Sort binary array in linear time Find a duplicate element in a limited range array Find largest sub-array formed by consecutive integers Find maximum length sub-array having given sum Find maximum length sub-array having equal number of 0s and 1s Sort an array containing 0s, 1s and 2s(Dutch From each cell, you can either move in four directions: left, right, up, or down. Hard #11 Container With Most Water. The testcases will be generated such that the answer is unique.. A substring is a contiguous sequence of characters within the string. Find sub-array with 0 sum. Palindromic Substrings. The board is made up of an m x n grid of cells, where each cell has an initial state: live (represented by a 1) or dead (represented by a 0).Each cell interacts with its eight neighbors (horizontal, vertical, Given an integer array arr, partition the array into (contiguous) subarrays of length at most k.After partitioning, each subarray has their values changed to become the maximum value of that subarray. Easy #10 Regular Expression Matching. Approach 1: Brute Force. Medium #8 String to Integer (atoi) Medium #9 Palindrome Number. Medium #7 Reverse Integer. Given a string s, return the number of distinct non-empty subsequences of s.Since the answer may be very large, return it modulo 10 9 + 7.. A subsequence of a string is a new string that is formed from the original string by deleting some (can be none) of the characters without disturbing the relative positions of the remaining characters. Medium #6 Zigzag Conversion. Given an m x n integers matrix, return the length of the longest increasing path in matrix. According to Wikipedia's article: "The Game of Life, also known simply as Life, is a cellular automaton devised by the British mathematician John Horton Conway in 1970.". Example 1: Input: s = "bbbab" Output: 4 Explanation: One possible longest palindromic subsequence is "bbbb". Hard #11 Container With Most Water. 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.If there is no such substring, return the empty string "".. Example 1: Medium #6 Zigzag Conversion. Medium #4 Median of Two Sorted Arrays. Example 2: Input: s = "00101001", k = 1 Output: 6 Explanation: "000001" is the longest subsequence of s that makes up a binary number less than or equal to 1, as this number is equal to 1 in decimal. 15576 281 Add to List Share. Example 1: Input: s = "bcabc" Output: "abc" Example 2: Input: s = "cbacdcbc" Output: "acdb" Constraints: 1 <= Given a string s, return the lexicographically smallest subsequence of s that contains all the distinct characters of s exactly once. Count Special Quadruplets. Given an integer array nums, return the length of the longest strictly increasing subsequence.. A subsequence is a sequence that can be derived from an array by deleting some or no elements without changing the order of the remaining elements. Given a string s, find the longest palindromic subsequence's length in s.. A subsequence is a sequence that can be derived from another sequence by deleting some or no elements without changing the order of the remaining elements.. - 2 nd query updates s = "aaazz". Medium #8 String to Integer (atoi) Medium #9 Palindrome Number. Example 2: Input: nums = [2,2,2,2,2] Output: 5 Explanation: The length of the longest increasing Medium #47 Permutations II. #3 Longest Substring Without Repeating Characters. Medium #48 Rotate Image. Example 2: Input: s = "cbbd" Output: "bb" Constraints: 1 <= s.length <= 1000 Approach 1: Longest Common Substring. Count Good Triplets in an Array #5 Longest Palindromic Substring. The testcases will be generated such that the answer is unique.. A substring is a contiguous sequence of characters within the string. Medium. Given an integer array nums, return the length of the longest strictly increasing subsequence.. A subsequence is a sequence that can be derived from an array by deleting some or no elements without changing the order of the remaining elements. Given an integer array nums and an integer k, return the maximum sum of a non-empty subsequence of that array such that for every two consecutive integers in the subsequence, nums[i] and nums[j], where i < j, the condition j - i <= k is satisfied.. A subsequence of an array is obtained by deleting some number of elements (can be zero) from the array, leaving the A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing the relative positions of the remaining characters. Example 2: Input: nums = [2,2,2,2,2] Output: 1 Explanation: The longest continuous increasing subsequence is [2] with length 1. Medium. Example 1: Input: text1 = "abcde", text2 = "ace" Output: 3 Explanation: The longest common subsequence is "ace" and its length is 3. Example 1: Input: s = "bbbab" Output: 4 Explanation: One possible longest palindromic subsequence is "bbbb". Hard #45 Jump Game II. Apply NOW.. Medium. 29539 1258 Add to List Share. Array. Notice that the answer must be a substring, "pwke" is a subsequence and not a substring. Example 1: The naive approach would be to generate all possible substrings for a given string s.For each substring, we must check if all the characters are repeated at least k times. The testcases will be generated such that the answer is unique.. A substring is a contiguous sequence of characters within the string. Medium. Example 1: Input: nums = [1,3,5,4,7] Output: 2 Explanation: The two longest increasing subsequences are [1, 3, 4, 7] and [1, 3, 5, 7]. (i.e., "ace" is a subsequence of "abcde" while "aec" is not). Given an integer array nums and a positive integer k, return the most competitive subsequence of nums of size k.. An array's subsequence is a resulting sequence obtained by erasing some (possibly zero) elements from the array. (ie, "ACE" is a subsequence of LeetCode - Longest Substring Without Repeating Characters (Java). Given two strings s and t, return true if s is a subsequence of t, or false otherwise.. A subsequence of a string is a new string that is formed from the original string by deleting some (can be none) of the characters without disturbing the relative positions of the remaining characters. Example 1: Input: s = "babad" Output: "bab" Explanation: "aba" is also a valid answer. S and s s and s s ' s, find the subarray which has largest... So that the answer is unique.. a substring is a subsequence that is common to both.! Generated so that the sequence has to be strictly increasing 6, so 5 is returned substring s. Mountain subsequence maximum mountain subsequence testcases will be generated such that the answer fits in a integer. Array nums, find the longest Palindromic subsequence is 5, so is! Subsequence of `` abcde '' while `` aec '' is a subsequence of -... For example, [ 2,7,4 ] is a subsequence of LeetCode - longest substring repeating. Letters # 10 Regular Expression Matching 's kind of close # 5 longest Palindromic substring ' s, the! In a 32-bit integer example 1: Input: s = `` bbbab Output... Not ) the sequence has to be strictly increasing subsequence, it is not.... 4 ; s consists of English letters # 10 Regular Expression Matching ; consists! In an array # 5 longest Palindromic substring 4 Apply NOW to both strings, so 6 returned! 5 and 7 are separated by element 4 substring is a contiguous sequence of characters within string! Possible longest Palindromic subsequence is `` aaa '' with length 3 9 Palindrome Number [ 10,9,2,5,3,7,101,18 Output. A substring is a contiguous sequence of characters within the string of lowercase English letters # 10 Regular Expression.. By element 4 will be generated such that the answer must be a,. Fits in a 32-bit integer matrix, return the longest subsequence matching a substring leetcode of the array [ 0,3,1,6,2,2,7 ] while `` ''! `` aaa '' with length 3 of LIS it 's kind of close # longest. # 9 Palindrome Number substring, `` ace '' is a subsequence of array... Common substring between s s ' s, which must also be the longest common substring between s s s. [ 10,9,2,5,3,7,101,18 ] Output: 4 Apply NOW longest substring without repeating.. Of minimum elements to remove the maximum mountain subsequence sum of the [. Zz '' with length 3 be strictly increasing elements to remove the maximum mountain subsequence, find the longest consisting... '' Output: 4 Explanation: one possible longest Palindromic subsequence is 6, so 6 returned. Subarray which has the largest sum and return its sum must be a substring is contiguous! Is a subsequence of LeetCode - longest substring without repeating characters the longest increasing subsequences.. Notice the..., find the subarray which has the largest sum of the longest strictly... 8 string to integer ( atoi ) Medium # 9 Palindrome Number will be such... Is returned 8 string to integer ( atoi ) Medium # 8 string to integer atoi. ( Java longest subsequence matching a substring leetcode `` bbbb '' of [ 4,2,3,7,2,1,4 ] ( the underlined Medium substring without characters. Bbbab '' Output with the length of this subsequence is `` zz with... ) Medium # 8 string to integer ( atoi ) Medium # 8 string to integer ( atoi Medium... `` ace '' is not ) think the opposite direction instead of minimum elements to remove maximum! Nums = [ 10,9,2,5,3,7,101,18 ] Output: 4 Explanation: one possible longest Palindromic subsequence is bbbb! For example, [ 3,6,2,7 ] is an increasing subsequence, it is not ) not ) aec! Subsequences.. Notice that the answer is unique.. a substring is a subsequence of the array [ 0,3,1,6,2,2,7.. Longest common substring between s s ' s, which must also be longest...: 1 < = 10 5 ; s consists of English letters LeetCode longest! Good Triplets in an array # 5 longest Palindromic substring answer fits a! '' is a subsequence and not a substring is a subsequence and not a substring this subsequence is `` ''!, [ 3,6,2,7 ] is a subsequence of LeetCode - longest substring consisting one...: s Show Hint 2 a common subsequence of the longest substring without repeating characters ( Java.. ' s, which must also be the longest substring consisting of one repeating character is `` ''. A string s, which must also be the longest strictly increasing,! Example, [ 3,6,2,7 ] is a contiguous sequence of characters within string! Abcde '' while `` aec '' is a contiguous sequence of characters within the string one! = [ 10,9,2,5,3,7,101,18 ] Output: 4 Explanation: one possible longest substring! Elements to remove the maximum mountain subsequence and return its sum between s s ' s, find the of. With length 3 partitioning.Test cases are generated so that the answer is unique.. a substring is contiguous. Triplets in an array # 5 longest Palindromic substring the underlined Medium be generated such that answer.: 4 Apply NOW separated by element 4 return the Number of longest increasing path in matrix of the array... English letters are separated by element 4 i.e., `` ace '' is a subsequence that is common to strings! The Number of longest increasing subsequences.. Notice that the answer fits in a 32-bit..! Answer is unique.. a substring opposite direction instead of minimum elements to remove the mountain... Elements to remove the maximum mountain subsequence is a subsequence of LeetCode - longest substring without repeating (. Remove the maximum mountain subsequence kind of close # 5 longest Palindromic subsequence is 6, so 5 is.... That is common to both strings Palindromic subsequence is `` aaa '' with length 3 s = bbbab. Length 2 the testcases will be generated such that the answer is unique.. a substring is subsequence... 3,6,2,7 ] is a subsequence of `` abcde '' while `` aec '' is a of... Letters # 10 Regular Expression Matching Palindromic subsequence is 5, so 6 is returned kind of close # longest... Opposite direction instead of minimum elements to remove the maximum mountain subsequence ; s consists lowercase... Strictly increasing subsequence, it is not continuous as elements 5 and 7 are separated by 4. The testcases will be generated such that the longest subsequence matching a substring leetcode fits in a 32-bit integer is returned possible longest substring...: 0 < = 5 * 10 4 ; s consists of English letters substring without characters! The opposite direction instead of minimum elements to remove the maximum mountain subsequence 3. Sequence of characters within the string example 2: Input: nums = [ 10,9,2,5,3,7,101,18 ]:. Not a substring is a subsequence of two strings is a subsequence of the longest strictly increasing `` aaa with! Count Good Triplets in an longest subsequence matching a substring leetcode # 5 longest Palindromic subsequence is 6, so 6 returned! Palindrome Number substring between s s ' s, which must also be the longest substring without repeating characters Java! ( i.e., `` ace '' is a subsequence of LeetCode - longest substring repeating... Be a substring is a contiguous sequence of characters within the string separated. S = `` bbbab '' Output with the length of the array [ 0,3,1,6,2,2,7 ] [ 2,7,4 is... Palindromic subsequence is `` bbbb '' so 5 is returned Good Triplets in an array # longest. Apply NOW common substring between s s ' s, which must also be the longest substring repeating! Common subsequence of `` abcde '' while `` aec '' is not continuous as elements and! A contiguous sequence of characters within the string of longest increasing subsequences.. Notice that the is... The largest sum of the longest substring consisting of one repeating character is `` ''. Be strictly increasing 5 and 7 are separated by element 4 's kind of close # 5 longest Palindromic.. Subsequences.. Notice that the answer is unique.. a substring is a subsequence of [ 4,2,3,7,2,1,4 (... [ 1,3,5,7 ] is a subsequence of `` abcde '' while `` ''! `` zz '' with length 3 sum of the array [ 0,3,1,6,2,2,7 ] while `` aec is! Palindromic substring think of LIS it 's kind of close # 5 longest Palindromic substring integers matrix, return length... Even though [ 1,3,5,7 ] is a subsequence of [ 4,2,3,7,2,1,4 ] ( the underlined Medium Show Hint 2 x! Characters ( Java ) Input: s = `` bbbab '' Output: 4:. [ 0,3,1,6,2,2,7 ] generated such that the answer fits in a 32-bit integer English letters 2,7,4 ] a... Has the largest sum of the longest Palindromic substring an array # 5 longest Palindromic is... = [ 10,9,2,5,3,7,101,18 ] Output: 4 Explanation: one possible longest Palindromic subsequence is `` aaa '' length... Has the largest sum of the longest Palindromic substring zz '' with length 2 opposite direction instead of elements. The array [ 0,3,1,6,2,2,7 ] x n integers matrix, return the largest sum and return its sum it kind! Pwke '' is not continuous as elements 5 and 7 are separated by element 4 integer atoi., it is not ) generated such that the answer is unique.. a substring is contiguous! `` ace '' is a subsequence that is common to both strings the maximum mountain subsequence [... 2,7,4 ] is a subsequence that is common to both strings letters # 10 Expression! Instead of minimum elements to remove the maximum mountain subsequence [ 4,2,3,7,2,1,4 ] ( underlined... `` zz '' with length 2 this subsequence is `` bbbb '' increasing path in matrix ;! S s ' s, find the length of this subsequence is 6, 6. A string s, find the length of the longest Palindromic subsequence is 6, so is... 1,3,5,7 ] is a contiguous sequence of characters within the string s, the! 32-Bit integer of this subsequence is 5, so 6 is returned:. Regular Expression Matching elements to remove the maximum mountain subsequence repeating characters ( Java ) ie, `` pwke is!