Given n balloons, indexed from 0 to n-1. Each balloon is painted with a number on it represented by array nums. You are asked to burst all ...
There are a number of spherical balloons spread in two dimensional space. For each balloon, provided input is the start and end coordinates of the horizontal diameter. Since it s horizontal, y coordi ...
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Given n balloons, indexed from 0 to n-1. Each balloon is painted with a number on it represented by array nums. You are asked to burst all ...
character in text at most once. Return the maximum number o ...
A car travels from a starting position to a destination which is `target` miles east of the startin ...
這道題目做了兩個晚上,發現解題思路的優化過程非常有代表性。文章詳細說明了如何從回溯解法改造為分治解法,以及如何由分治解法過渡到動態規划解法。解法的用時從 超時 到 超過 95.6% 提交者,到超過 ...
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Given a grid where each entry is only 0 or 1, find the number of corner rectangles. A corner rectangle is 4 distinct 1s on the grid that form ...
Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by connecting ...
Given n points in the plane that are all pairwise distinct, a "boomerang" is a tuple of points (i ...