给定数组和某个值,求和等于某值的序号
作者:互联网
给定数组和某个值,求和等于某值的序号
给定数组和某个值,求和等于某值的序号
package com.test; import java.util.Arrays; /** * @author stono * @date 20180808 * 1 Given an array of integers, return indices of the two numbers * such that they add up to a specific target. * You may assume that each input would have exactly one solution, * and you may not use the same element twice. * Example: * Given nums = [2, 7, 11, 15], target = 9, * Because nums[0] + nums[1] = 2 + 7 = 9, * return [0, 1]. */ public class Lesson001 { public static void main(String[] args) { int[] ints = {2, 7, 11, 15}; int target = 9; getIndicesByArrayAndTarget(ints, target); } private static void getIndicesByArrayAndTarget(int[] ints, int target) { System.out.println("input:" + Arrays.toString(ints)); int length = ints.length; for (int i = 0; i < length; i++) { for (int j=0;j<length;j++) { // i==j不能进行判断 if (i - j == 0) { continue; } // 强制循环两次 int res = ints[i] + ints[j] - target; if (res == 0) { System.out.println("output:"+i+";"+j); } } } } }
应该用map的方式进行选择;
标签:target,nums,int,某值,length,给定,ints,序号 来源: https://blog.51cto.com/u_15241951/2869562