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# 739. Daily Temperatures
"""
given an array of integers 'temperatures' represents the daily temperatures
return an array 'answer' such that 'answer[i]' is the number of days you have
to wait after the i'th day to get a warmer temperature. if there is no future
day for which this is possible, keep 'answer[i] == 0' instead.
"""
class Solution(object):
def dailyTemperatures(self, temperatures):
"""
:type temperatures: List[int]
:rtype: List[int]
"""
ans = [0] * len(temperatures)
stack = []
for i, t in enumerate(temperatures):
while stack and temperatures[stack[-1]] < t:
curr = stack.pop()
ans[curr] = i - curr
stack.append(i)
return ans
if __name__ == "__main__":
obj = Solution()
print(obj.dailyTemperatures(temperatures=[73, 74, 75, 71, 69, 72, 76, 73]))
print(obj.dailyTemperatures(temperatures=[30, 40, 50, 60]))
print(obj.dailyTemperatures(temperatures=[30, 60, 90]))
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