IT技术分享

640 阅读

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2017年09月13日

640 阅读

0 评论

[LeetCode 377] Combination Sum IV [Java] [Runtime : 6MS]

1. DescriptionGiven an integer array with all positive numbers and no duplicates, find the number of possible combinations that add up to...

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2017-09-02

633 阅读

0 评论

2017年09月02日

633 阅读

0 评论

[LeetCode 40] Combination Sum II [Java] [Runtime : 26MS]

1. DescriptionGiven a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate ...

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2017-09-02

661 阅读

0 评论

2017年09月02日

661 阅读

0 评论

[LeetCode 39] Combination Sum [Java] [Runtime : 19MS]

1. DescriptionGiven a set of candidate numbers (C) (without duplicates) and a target number (T), find all unique combinations in C where ...

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2017-09-02

707 阅读

0 评论

2017年09月02日

707 阅读

0 评论

[LeetCode 343] Integer Break [Java] [Runtime : 1MS]

1. DescriptionGiven a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integ...

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2017-09-02

751 阅读

0 评论

2017年09月02日

751 阅读

0 评论

[LeetCode 204] Happy Number [Java] [Beat: 91.09%]

1. DescriptionCount the number of prime numbers less than a non-negative number, n.2. Runtime Distribution3. Submission Details4. Example...

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2017-09-02

740 阅读

0 评论

2017年09月02日

740 阅读

0 评论

[LeetCode 202] Happy Number [Java] [Runtime : 5MS]

1. DescriptionWrite an algorithm to determine if a number is "happy".A happy number is a number defined by the following process: Startin...

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2017-09-02

608 阅读

0 评论

2017年09月02日

608 阅读

0 评论

[LeetCode 172] Factorial Trailing Zeroes [Java] [Runtime : 1MS]

1. DescriptionGiven an integer n, return the number of trailing zeroes in n!.Note: Your solution should be in logarithmic time complexity...

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2017-09-02

806 阅读

0 评论

2017年09月02日

806 阅读

0 评论

2017-09-01

[LeetCode 168] Excel Sheet Column Title [Java] [Runtime : 0MS]

1. DescriptionGiven a positive integer, return its corresponding column title as appear in an Excel sheet.2. Runtime Distribution3. Submi...

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2017-09-01

886 阅读

0 评论

2017年09月01日

886 阅读

0 评论

2017-09-01

[LeetCode 171] Excel Sheet Column Number [Java] [Runtime : 2MS]

1. DescriptionRelated to question Excel Sheet Column TitleGiven a column title as appear in an Excel sheet, return its corresponding colu...

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2017-09-01

551 阅读

0 评论

2017年09月01日

551 阅读

0 评论

2017-09-01

[LeetCode 231] Power of Two [Java] [Runtime : 2MS]

1. DescriptionImplement pow(x, n).2. Runtime Distribution3. Submission Details4. ExampleInput 16 Output: True5. Codepublic boolean isPow...

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2017-09-01

699 阅读

0 评论

2017年09月01日

699 阅读

0 评论

[LeetCode 201] Bitwise AND of Numbers Range [Java] [Runtime : 9MS]

1. DescriptionGiven a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusi...

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2017-08-31

605 阅读

0 评论

2017年08月31日

605 阅读

0 评论

[LeetCode 190] Reverse Bits [Java] [Runtime : 3MS]

1. DescriptionReverse bits of a given 32 bits unsigned integer.For example, given input 43261596 (represented in binary as 00000010100101...

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2017-08-31

664 阅读

0 评论

2017年08月31日

664 阅读

0 评论

[LeetCode 191] Number of 1 Bits [Java] [Runtime : 1MS]

1. DescriptionWrite a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight...

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2017-08-31

644 阅读

0 评论

2017年08月31日

644 阅读

0 评论

[LeetCode 137] Single Number II [Java] [Runtime : 9MS]

1. DescriptionGiven an array of integers, every element appears three times except for one, which appears exactly once. Find that single ...

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2017-08-31