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].
题目翻译:
给定一个整数数组,返回和为指定数字的元素下标。
条件:每个输入都只有一个解,并且不能两次使用相同的元素。
举例:
输入:numbers={2, 7, 11, 15}, target = 9
返回值:0,1
方案:
class Solution {
public:
vector<int> twoSum(vector<int>& nums, int target) {
vector<int> result;
for (int i = 0; i < nums.size()-1; i++) {
for (int j = i+1; j < nums.size(); j++) {
if (nums[i] + nums[j]==target) {
result.push_back(i);
result.push_back(j);
return result;
}
}
}
return result;
}
};