Leetcode - 随笔分类(第7页) - neverlandly

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posted @ 2019-10-20 05:57 neverlandly 阅读(2) 评论(0) 推荐(0)

摘要：Note: The size of the BST will not exceed 50. The BST is always valid and each node's value is different. Note: The size of the BST will not exceed 50 阅读全文

posted @ 2019-10-18 15:04 neverlandly 阅读(213) 评论(0) 推荐(0)

Leetcode: Flip Equivalent Binary Trees

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posted @ 2019-10-18 13:25 neverlandly 阅读(2) 评论(0) 推荐(0)

Leetcode: Find And Replace in String

摘要：HashMap Sort and replace S from right to left (未深究) 阅读全文

posted @ 2019-10-18 12:57 neverlandly 阅读(133) 评论(0) 推荐(0)

Leetcode: Crack The Safe

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posted @ 2019-10-18 10:21 neverlandly 阅读(4) 评论(0) 推荐(0)

Leetcode: Confusing Number

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posted @ 2019-10-17 15:28 neverlandly 阅读(17) 评论(0) 推荐(0)

Leetcode: Optimize Water Distribution in a Village && Summary: Union Find and Minimum Spanning Tree

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posted @ 2019-10-17 14:24 neverlandly 阅读(5) 评论(0) 推荐(0)

Leetcode: Rotated Digits

摘要：X is a good number if after rotating each digit individually by 180 degrees, we get a valid number that is different from X. Each digit must be rotated - we cannot choose to leave it alone. A number i 阅读全文

posted @ 2019-10-17 12:21 neverlandly 阅读(133) 评论(0) 推荐(0)

Leetcode: Find Eventual Safe States

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posted @ 2019-10-16 15:38 neverlandly 阅读(2) 评论(0) 推荐(0)

Leetcode: Minimum Area Rectangle II

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posted @ 2019-10-16 13:22 neverlandly 阅读(4) 评论(0) 推荐(0)

Leetcode: Binary Tree Coloring Game

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posted @ 2019-10-16 09:51 neverlandly 阅读(3) 评论(0) 推荐(0)

Leetcode: Repeated String Match

摘要：The idea is to keep string builder and appending until the length A is greater or equal to B. use a while loop to keep adding A to stringBuilder until 阅读全文

posted @ 2019-10-15 15:28 neverlandly 阅读(73) 评论(0) 推荐(0)

Leetcode: Delete Nodes And Return Forest

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posted @ 2019-10-15 13:50 neverlandly 阅读(3) 评论(0) 推荐(0)

Leetcode: Construct Binary Tree from Preorder and Postorder Traversal

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posted @ 2019-10-15 10:14 neverlandly 阅读(2) 评论(0) 推荐(0)

Leetcode: Longest Word in Dictionary through Deleting

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posted @ 2019-10-14 15:08 neverlandly 阅读(3) 评论(0) 推荐(0)

Leetcode: Student Attendance Record II

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posted @ 2019-10-14 13:21 neverlandly 阅读(2) 评论(0) 推荐(0)

Leetcode: Student Attendance Record I

摘要：1-liner s.contains("") normally is O(nm), but can be optimized to be O(n) O(n) scan 阅读全文

posted @ 2019-10-14 11:43 neverlandly 阅读(132) 评论(0) 推荐(0)

Leetcode: Split Array into Consecutive Subsequences

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posted @ 2019-10-13 09:26 neverlandly 阅读(4) 评论(0) 推荐(0)

Leetcode: Robot Room Cleaner

摘要：Given a robot cleaner in a room modeled as a grid. Each cell in the grid can be empty or blocked. The robot cleaner with 4 given APIs can move forward, turn left or turn right. Each turn it made is... 阅读全文

posted @ 2019-10-13 07:43 neverlandly 阅读(267) 评论(0) 推荐(0)

Leetcode: Time Based Key-Value Store

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posted @ 2019-10-13 05:53 neverlandly 阅读(3) 评论(0) 推荐(0)

随笔分类 - Leetcode