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].
题目很简单，给出一个数组和整数，从数组中找出两个数，使其相加等于该整数，返回其索引。
代码如下：
func twoSum(nums []int, target int) []int {
for key, value := range nums {
for k, v := range nums {
if k != key {
if v+value == target {
return []int{key, k}
}
}
}
}
return []int{}
}
