First Missing Positive Solutions in Go

Number 41

Difficulty Hard

Acceptance 32.1%

Solutions

Go solution by halfrost/LeetCode-Go

package leetcode

func firstMissingPositive(nums []int) int {
	numMap := make(map[int]int, len(nums))
	for _, v := range nums {
		numMap[v] = v
	}
	for index := 1; index < len(nums)+1; index++ {
		if _, ok := numMap[index]; !ok {
			return index
		}
	}
	return len(nums) + 1
}

package leetcode

func firstMissingPositive(nums []int) int {
	numMap := make(map[int]int, len(nums))
	for _, v := range nums {
		numMap[v] = v
	}
	for index := 1; index < len(nums)+1; index++ {
		if _, ok := numMap[index]; !ok {
			return index
		}
	}
	return len(nums) + 1
}