标签:solution NPU tco style 图片 假设 重复 for 解答
1. Two Sum
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].
中文版:
给定一个整数数组和一个目标值,找出数组中和为目标值的两个数。
你可以假设每个输入只对应一种答案,且同样的元素不能被重复利用。
示例:
给定 nums = [2, 7, 11, 15], target = 9 因为 nums[0] + nums[1] = 2 + 7 = 9 所以返回 [0, 1]
解答1:
1 class Solution { 2 public int[] twoSum(int[] nums, int target) { 3 for (int i = 0; i < nums.length; i++) { 4 for (int j = i+1; j <nums.length; j++) { 5 if (nums[i]+nums[j]==target){ 6 return new int[]{i,j}; 7 } 8 } 9 } 10 return null; 11 } 12 }
结果:
速度有点满,在num[i]的时候可以加条件限制来提高效率。
标签:solution NPU tco style 图片 假设 重复 for 解答
原文地址:https://www.cnblogs.com/ming-jia/p/9650917.html