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375. Guess Number Higher or Lower II We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You have to guess which numbe 阅读全文
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Week13 376. Wiggle Subsequence A sequence of numbers is called a wiggle sequence if the differences between successive numbers strictly alternate betw 阅读全文
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Week 12 673.Number of Longest Increasing Subsequence Given an unsorted array of integers, find the number of longest increasing subsequence. Example 1 阅读全文
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Week 11 343.Integer Break Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those intege 阅读全文
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474. Ones and Zeroes In the computer world, use restricted resource you have to generate maximum benefit is what we always want to pursue. For now, su 阅读全文
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638.Shopping Offers Medium In LeetCode Store, there are some kinds of items to sell. Each item has a price. However, there are some special offers, an 阅读全文
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338.Counting Bits Medium Given a non negative integer number num . For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their b 阅读全文
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714. Best Time to Buy and Sell Stock with Transaction Fee Medium Your are given an array of integers , for which the th element is the price of a give 阅读全文
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Week6 676.Implement Magic Dictionary Implement a magic directory with buildDict, and search methods. For the method buildDict, you'll be given a list 阅读全文
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529.Minesweeper Let's play the minesweeper game (Wikipedia, online game)! You are given a 2D char matrix representing the game board. 'M' represents a 阅读全文