1. 两数之和 goland实现

func twoSum(nums []int, target int) []int {
    ret := make([]int, 0)
    if len(nums) < 2 {
        return ret
    }   
    for i:=0;i<len(nums);i++ {
        for j:=i+1;j<len(nums);j++ {
            if nums[i]+nums[j] == target {
                ret = append(ret, i)
                ret = append(ret, j)
            }
        }
    }
    return ret
}