0001_two_sum.go

package main

import "fmt"

func twoSum(nums []int, target int) []int {
	m := make(map[int]int)

	for i, v := range nums {
		if idx, ok := m[target-v]; ok {
			return []int{idx, i}
		}

		m[v] = i
	}

	return []int{}
}

func main() {
	nums := []int{2, 7, 11, 15}
	target := 9

	fmt.Println(twoSum(nums, target))
}