LeetCode – Strings – Consecutive Characters
Given a string s, the power of the string is the maximum length of a non-empty substring that contains only one unique character. Return the power of the string. Example…
LeetCode – Arrays – Number of Equivalent Domino Pairs
Given a list of dominoes, dominoes = is equivalent to dominoes = if and only if either (a==c and b==d), or (a==d and b==c) – that is, one domino can…
LeetCode – Arrays – Winner in Tic Tac Toe
Tic-tac-toe is played by two players A and B on a 3 x 3 grid. Here are the rules of Tic-Tac-Toe: Given an array moves where each element is another…
LeetCode – Arrays – Distance between Bus Stops
A bus has n stops numbered from 0 to n - 1 that form a circle. We know the distance between all pairs of neighboring stops where distance is the…
LeetCode – Strings – Destination City
You are given the array paths, where paths = means there exists a direct path going from cityAi to cityBi. Return the destination city, that is, the city without any…
LeetCode – Strings – String Matching in an Array
Given an array of string words. Return all strings in words which is substring of another word in any order. String words is substring of words, if can be obtained…
LeetCode – Strings – 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.e. left substring and right substring). The score after splitting…
LeetCode – Strings – Reformat The String
Given alphanumeric string s. (Alphanumeric string is a string consisting of lowercase English letters and digits). You have to find a permutation of the string where no letter is followed…
LeetCode – Arrays – Duplicate Zeros
Given a fixed length array arr of integers, duplicate each occurrence of zero, shifting the remaining elements to the right. Note that elements beyond the length of the original array…
LeetCode – Arrays – Rank Transform of an Array
Given an array of integers arr, replace each element with its rank. The rank represents how large the element is. The rank has the following rules: Example 1: Input: arr…