/**

* @param {number[]} temperatures

* @return {number[]}

*/

var dailyTemperatures = function(temp ) {

if(temp.length === 0) return []

let res = new Array(temp.length).fill(0)

let stack = []

for(let i = 0 ; i < temp.length ; i++){

while(stack.length > 0 && temp[i] > temp[stack[stack.length-1]] ){

let top = stack.pop()

res[top] = i - top

}

stack.push(i)

}

return res

};