publicList<String>twoSum(int[] arr,intsum){if(arr ==null|| arr.length ==0) {returnnewArrayList<>(); } List<String> st =newArrayList<>(); Map<Integer, Integer> map =newHashMap<>();for(inti=0; i < arr.length; i++) {// 查看数组中是否存在当前值和目标值差的值if(map.containsKe...
更多文章查看个人博客 个人博客地址:twoSum 两数之和 【JAVA实现】 方法一 使用双重循环两两相加判断是否等于目标值 public List<String> twoSum2(int[] arr, int sum) { if (arr == null || arr.length == 0) { return new ArrayList<>(); } List<String> list = new ArrayList<>(); for (int...
return [0, 1]. 这道Two Sum 的题目作为 LeetCode 的开篇之题,乃是经典中的经典,正所谓‘平生不识 TwoSum,刷尽 LeetCode 也枉然’,就像英语单词书的第一个单词总是 Abandon 一样,很多没有毅力坚持的人就只能记住这一个单词,所以通常情况下单词书就前几页有翻动的痕迹,后面都是崭新如初,道理不需多讲,鸡汤...
Two Sum 两数之和 Leetcode 1. Two Sum 1. Two Sum 题目描述 示例: 解答 代码 1. Two Sum 题目描述 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 w......
Java Solution Since the desired class need add and get operations, HashMap is a good option for this purpose. publicclassTwoSum{privateHashMap<Integer, Integer>elements=newHashMap<Integer, Integer>();publicvoidadd(intnumber){if(elements.containsKey(number)){elements.put(number, elements.get(numbe...
Java:使用计算器sumTwoNumbers、subtractTwoNumbers、divideTwoNumbers和multiplyTwoNumbers测试失败任务描述:在...
import java.util.Scanner; public class Calculator { public static void main(String args[]) { int num1, num2, sum; // Taking input from user Scanner scanner = new Scanner(System.in); System.out.print("Enter two numbers : "); num1 = scanner.nextInt(); num2 = scanner.nextInt(); ...
Java Aptitude Questions Java Interview Questions Java Find Output Programs Given two numbers, we have to calculate the Lowest Common Multiple of them using the recursion. Submitted byNidhi, on June 02, 2022 Problem statement In this program, we will read two integer numbers from the us...
// Find sum and average of two numbers in Java import java.util.*; public class Numbers { public static void main(String args[]) { int a, b, sum; float avg; Scanner buf = new Scanner(System.in); System.out.print("Enter first number : "); a = buf.nextInt(); System.out....
intsum = firstInteger + secondInteger; System.out.println("The sum of both integers: "+ sum); } } Program output The sum of both integers:30 2. Java program to add two integers entered by user In the given Java example, we will take the two inters inputs from the user and after...