739. Daily Temperatures

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].

# @lc code=start
using LeetCode

function daily_temperatures(T::Vector{Int})
    res = fill(0, length(T))
    stk = Int[]
    for i in 1:length(T)
        while !isempty(stk) && T[stk[end]] < T[i]
            res[stk[end]] = i - stk[end]
            pop!(stk)
        end
        push!(stk, i)
    end
    res
end
# @lc code=end

daily_temperatures (generic function with 1 method)

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