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摘要： 《深入理解Java虚拟机》学习笔记 一、走近Java JDK(Java Development Kit):包含Java程序设计语言，Java虚拟机，JavaAPI，是用于支持 Java 程序开发的最小环境。 JRE（Java Runtime Environment）：包含Java SE API 子集 阅读全文

摘要： Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Pan 阅读全文

摘要： Write a function to find the longest common prefix string amongst an array of strings. 输出几个字符串的最长公共前缀 C++(6ms): 阅读全文

摘要： Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Example 2: Java(57ms): 阅读全文

摘要： Given a group of two strings, you need to find the longest uncommon subsequence of this group of two strings. The longest uncommon subsequence is defi 阅读全文

摘要： Given two strings A and B, find the minimum number of times A has to be repeated such that B is a substring of it. If no such solution, return -1. For 阅读全文

摘要： Count the number of segments in a string, where a segment is defined to be a contiguous sequence of non-space characters. Please note that the string 阅读全文

摘要： Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the last word 阅读全文

摘要： Given two binary strings, return their sum (also a binary string). For example,a = "11"b = "1"Return "100". 字符串表示二进制数，求相加后的结果 C++（6ms）： 阅读全文

摘要： Initially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means it moves back to the or 阅读全文