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原创 leetcode 刷题:Valid Palindrome(回文字符串)
题目:Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Panama" is a palindrome."race a car"
2014-09-06 16:38:41
408
原创 栈实现二进制转十进制
先创建一个栈的类:public class Stack {//栈容量private int maxSize;//实现栈的数组private char[] arr;//栈顶private int top;//构造方法public Stack(int n){maxSize = n;arr = new char[maxSize];top = -
2014-08-31 19:19:54
262
原创 简单排序
import java.util.Arrays;public class Sort {public static void main(String[] args){int[] arr = new int[]{1,23,8,9,17,5,3};Sort s = new Sort();System.out.println(Arrays.toString(s.bubble
2014-08-30 17:24:05
328
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