Description https://leetcode.com/problems/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…

Description https://leetcode.com/problems/thousand-separator/ Given an integer n, add a dot (“.”) as the thousands separator and return it in string format. Example 1: Input: n…

Description https://leetcode.com/problems/maximum-number-of-balloons/ Given a string text, you want to use the characters of text to form as many instances of the word “balloon” as possible.…

Description https://leetcode.com/problems/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[i] is substring of words[j], if can…

Description https://leetcode.com/problems/find-words-that-can-be-formed-by-characters/ Given a sentence that consists of some words separated by a single space, and a searchWord. You have to check if searchWord is a…

Description https://leetcode.com/problems/consecutive-characters/ Given a string s, the power of the string is the maximum length of a non-empty substring that contains only…

Description https://leetcode.com/problems/uncommon-words-from-two-sentences/ We are given two sentences A and B.  (A sentence is a string of space separated words.  Each word consists only of lowercase letters.) A…

Description https://leetcode.com/problems/keyboard-row/ Given an array of strings words, return the words that can be typed using letters of the alphabet on only…

Description https://leetcode.com/problems/reformat-date/ Given a date string in the form Day Month Year, where: Day is in the set {“1st”, “2nd”, “3rd”, “4th”, …, “30th”, “31st”}.…

Description https://leetcode.com/problems/subdomain-visit-count/ A website domain like “discuss.leetcode.com” consists of various subdomains. At the top level, we have “com”, at the…