LeetCode刷题记录001Two Sum

Posted 2020-10-18 东京八十万萝莉总教头

1.题目及翻译

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].

给定一个整数数组，返回两个数字的索引，使它们加起来成为一个特定的目标。

您可能会认为每个输入都只有一个解决方案，而且您可能不会使用相同的元素两次。

2.思路

其实不算真的很明白题目的意思，只是凭借着自己的理解，写了种解法，效率不高。

3.解法

1）自己

public class Solution {
    public int[] TwoSum(int[] nums, int target) {
          int[] newIntArr = null;
            for (int i = 0; i < nums.Length; i++)
            {
                for (int j = 0; j < nums.Length; j++)
                {
                    if ((i < j) && nums[i] + nums[j] == target)
                    {
                        newIntArr = new int[] { i, j };
                    }
                }
            }
            return newIntArr;
    }
}