08 2018 档案
摘要：We had some 2-dimensional coordinates, like "(1, 3)" or "(2, 0.5)". Then, we removed all commas, decimal points, and spaces, and ended up with the str
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摘要：We are given the head node root of a binary tree, where additionally every node's value is either a 0 or a 1. Return the same tree where every subtree
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摘要：We partition a row of numbers A into at most K adjacent (non-empty) groups, then our score is the sum of the average of each group. What is the larges
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摘要：A website domain like "discuss.leetcode.com" consists of various subdomains. At the top level, we have "com", at the next level, we have "leetcode.com
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摘要：You have a list of points in the plane. Return the area of the largest triangle that can be formed by any 3 of the points. Notes: 3 <= points.length <
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摘要：We are given non-negative integers nums[i] which are written on a chalkboard. Alice and Bob take turns erasing exactly one number from the chalkboard,
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摘要：Sometimes people repeat letters to represent extra feeling, such as "hello" -> "heeellooo", "hi" -> "hiiii". Here, we have groups, of adjacent letters
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摘要：There are two types of soup: type A and type B. Initially we have N ml of each type of soup. There are four kinds of operations: Serve 100 ml of soup
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