Golang | Leetcode Golang题解之第496题下一个更大元素I
题目：
题解：
func nextGreaterElement(nums1, nums2 []int) []int {
mp := map[int]int{}
stack := []int{}
for i := len(nums2) - 1; i >= 0; i-- {
num := nums2[i]
for len(stack) > 0 && num >= stack[len(stack)-1] {
stack = stack[:len(stack)-1]
}
if len(stack) > 0 {
mp[num] = stack[len(stack)-1]
} else {
mp[num] = -1
}
stack = append(stack, num)
}
res := make([]int, len(nums1))
for i, num := range nums1 {
res[i] = mp[num]
}
return res
}