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LeetCode

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全部文章 / LeetCode （共115篇）

【Leet Code】70. Climbing Stairs

You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you c...

2019-10-04

0 497

【Leet Code】206. Reverse Linked List

Reverse a singly linked list. Example: Input: 1->2->3->4->5->NULL Output: 5->4->3->2->1->NULL Follow up: A linked lis...

2019-10-04

0 725

【Leet Code】206. Reverse Linked List

Reverse a singly linked list. Example: Input: 1->2->3->4->5->NULL Output: 5->4->3->2->1->NULL Follow up: A linked lis...

2019-10-04

0 492

【Leet Code】53. Maximum Subarray

Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum. Example: In...

2019-10-04

0 482

【Leet Code】53. Maximum Subarray

Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum. Example: In...

2019-10-04

0 478

【Leet Code】22. Generate Parentheses

Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution set is: ...

2019-10-03

0 465

【Leet Code】22. Generate Parentheses

Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution set is: ...

2019-10-03

0 529

【Leet Code】17. Letter Combinations of a Phone Number

Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. A mapping of digit to l...

2019-10-03

0 641

【Leet Code】17. Letter Combinations of a Phone Number

Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. A mapping of digit to l...

2019-10-03

0 479

【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...

2019-10-03

0 512