给定一个整数数组 temperatures ，表示每天的温度，返回一个数组 answer ，其中 answer[i] 是指对于第 i 天，下一个更高温度出现在几天后。如果气温在这之后都不会升高，请在该位置用 0 来代替。

示例 1:

输入: temperatures = [73,74,75,71,69,72,76,73]
输出: [1,1,4,2,1,1,0,0]
示例 2:

输入: temperatures = [30,40,50,60]
输出: [1,1,1,0]
示例 3:

输入: temperatures = [30,60,90]
输出: [1,1,0]

提示：

1 <= temperatures.length <= 105
30 <= temperatures[i] <= 100

// 暴力法
var dailyTemperatures = function(temperatures) {var answer = []for(var i = 0;i < temperatures.length;i++){var count = 0,point = 0for(var j = i+1;j <temperatures.length;j++){if(temperatures[j]<=temperatures[i]){count++}if(temperatures[j]>temperatures[i]){point+=1break}}if(point){answer.push(count+point) }else{answer.push(0) }}return answer
};

// 栈
var dailyTemperatures = function(temperatures) {var stack = new Array(temperatures.length)var res = new Array(temperatures.length)var top = -1for(var i = temperatures.length-1;i>=0;i--){// 小于等于目标值则出栈while(top>=0&&temperatures[stack[top]]<=temperatures[i]){top --}res[i] = top==-1?0:stack[top]-itop++stack[top]=i}return res
};