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LeetCode

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全部文章 / LeetCode （共6篇）

Leetcode 12. Integer to Roman

初始化版本直接计算判断爆破，时间复杂度较高优化后的版本https://blog.csdn.net/weixin_39459624/article/details/84592115 Roman numerals are represented by seven different symbols: ...

2018-11-28

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LeetCode 12. Integer to Roman

LeetCode 12. Integer to Roman Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100...

2018-11-28

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LeetCode 6. ZigZag Conversion

/* The string “PAYPALISHIRING” is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed fo...

2018-11-12

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LeetCode 20. Valid Parentheses

/* Given a string containing just the characters ‘(’, ‘)’, ‘{’, ‘}’, ‘[’ and ‘]’, determine if the input string is valid. An input string is valid if...

2018-11-10

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LeetCode 21. Merge Two Sorted Lists

Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists. Example...

2018-11-10

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LeetCode 7. Reverse Integer

LeetCode 7. Reverse Integer problem Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input: 123 Output: 321 Example 2: Inpu...

LeetCode

2018-11-07

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