天行健，君子以自强不息

Givennnon-negative integers representing the histogram's bar height where the width of each bar is 1, find the area of largest rectangle in the histogram. Above is a histogram where width of ea...

Givennnon-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. The above elevation map is represented by array...

Write a classStockSpannerwhich collects daily price quotes for some stock, and returns thespanof that stock's price for the current day. The span of the stock's price todayis defined as the maxi...

Given a list of daily temperaturesT, 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...