随笔分类 - String
发表于 2019-05-03 11:32阅读：184评论：0推荐：0
摘要：Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or
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发表于 2019-04-30 20:48阅读：213评论：0推荐：0
摘要：We are given two arrays A and B of words. Each word is a string of lowercase letters. Now, say that word b is a subset of word a if every letter in b
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发表于 2019-04-30 18:00阅读：282评论：0推荐：0
摘要：A string S of lowercase letters is given. Then, we may make any number of moves. In each move, we choose one of the first K letters (starting from the
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发表于 2019-04-29 22:07阅读：208评论：0推荐：0
摘要：Given a balanced parentheses string S, compute the score of the string based on the following rule: () has score 1 AB has score A + B, where A and B a
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发表于 2019-04-29 21:27阅读：296评论：0推荐：0
摘要：To some string S, we will perform some replacement operations that replace groups of letters with new ones (not necessarily the same size). Each repla
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发表于 2019-04-28 21:33阅读：229评论：0推荐：0
摘要：We had some 2-dimensional coordinates, like "(1, 3)" or "(2, 0.5)". Then, we removed all commas, decimal points, and spaces, and ended up with the str
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发表于 2019-04-26 19:27阅读：347评论：0推荐：0
摘要：You are given a string expression representing a Lisp-like expression to return the integer value of. The syntax for these expressions is given as fol
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发表于 2019-04-25 22:12阅读：229评论：0推荐：0
摘要：Give a string s, count the number of non-empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in th
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发表于 2019-04-23 12:46阅读：324评论：0推荐：0
摘要：Given a string representing a code snippet, you need to implement a tag validator to parse the code and return whether it is valid. A code snippet is
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发表于 2019-04-22 22:32阅读：277评论：0推荐：0
摘要：Given an integer n, find the closest integer (not including itself), which is a palindrome. The 'closest' is defined as absolute difference minimized
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发表于 2019-04-22 21:37阅读：273评论：0推荐：0
摘要：Given a positive 32-bit integer n, you need to find the smallest 32-bit integer which has exactly the same digits existing in the integer n and is gre
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发表于 2019-04-16 11:21阅读：167评论：0推荐：0
摘要：Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. Example 1: Input: 123 Output: "
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发表于 2019-04-15 21:21阅读：140评论：0推荐：0
摘要：Implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers, +, -, *, / operators a
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