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总结:还是掌握方法的运用++++++package com.c2;//随机数组合,随机号码产生器//随机号码import java.util.Random;public class rfe { private static Random random = new Random(); public static String getRandom(String[] a, int length, int alength) { StringBuffer x = new StringBuffer(); for (int i = 0; i < length; i++) { x.append(Str. 阅读全文
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总结:实现从键盘控制执行次数,困惑我很久,直到昨日在提问时,网友说通过循环是肯定可以的所以顿悟了package com.c2;import java.util.Arrays;import java.util.Scanner;//从键盘输入数,然后排序√好了public class tree { public static void main(String[] args) { Scanner c = new Scanner(System.in); System.out.println("输入执行次数-----"); int x = c.nextInt(); int y[] = 阅读全文
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总结:package com.ja;import java.util.Arrays;import java.util.Collections;public class mili { public static void main(String[] args) { int a[] = new int[] { 3, 25, 231, 1, 21, 4, 12 }; Arrays.sort(a); for (int i = 0; i < a.length; i++) { System.out.print(a[i] + " "); } String b[] = new Str 阅读全文