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开启python刷题模式，用不惯leetcode。771. Jewels and StonesDescriptionHintsSubmissionsDiscussSolutionPick OneYou're given strings J representing the types of stones that are jewels, and S representing the stones ...

461. Hamming DistanceDescriptionHintsSubmissionsDiscussSolutionPick OneThe Hamming distance between two integers is the number of positions at which the corresponding bits are different.Given two inte...

657. Judge Route CircleDescriptionHintsSubmissionsDiscussSolutionPick OneInitially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means ...

617. Merge Two Binary TreesDescriptionHintsSubmissionsDiscussSolutionPick OneGiven two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overla...

728. Self Dividing NumbersDescriptionHintsSubmissionsDiscussSolutionPick OneA self-dividing number is a number that is divisible by every digit it contains.For example, 128 is a self-dividing number b...

Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as poss...