Given a list of daily temperatures T
, return a list such that, for each day in the input, tells you how many days you would have to wait until a warmer temperature. If there is no future day for which this is possible, put 0
instead.
For example, given the list of temperatures T = [73, 74, 75, 71, 69, 72, 76, 73]
, your output should be [1, 1, 4, 2, 1, 1, 0, 0]
.
Note: The length of temperatures
will be in the range [1, 30000]
. Each temperature will be an integer in the range [30, 100]
.
class Solution { public int[] dailyTemperatures(int[] temperatures) { Stack<Integer> stack = new Stack<>(); int[] ret = new int[temperatures.length]; for(int i = 0; i < temperatures.length; i++) { while(!stack.isEmpty() && temperatures[i] > temperatures[stack.peek()]) { int idx = stack.pop(); ret[idx] = i - idx; } stack.push(i); } return ret; } }