Wednesday, May 12, 2021

LeetCode [1539] Kth Missing Positive Number

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  1539.   Kth Missing Positive Number Easy 1003 57 Add to List Share Given an array  arr  of positive integers sorted in a  strictly increas...
Sunday, May 9, 2021

LeetCode [1650] Lowest Common Ancestor of a Binary Tree III

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  1650.   Lowest Common Ancestor of a Binary Tree III Medium 179 8 Add to List Share Given two nodes of a binary tree  p  and  q , return  t...
Saturday, May 8, 2021

LeetCode[1762] Buildings With an Ocean View

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1762. Buildings With an Ocean View Medium 101 16 Add to List Share There are  n  buildings in a line. You are given an integer array  height...
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Thursday, April 29, 2021

LeetCode [1460] Make Two Arrays Equal by Reversing Sub-arrays

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  1460.   Make Two Arrays Equal by Reversing Sub-arrays Easy 375 77 Add to List Share Given two integer arrays of equal length  target  and ...
Wednesday, April 28, 2021

Shortest Cycle in a Directed Graph

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https://stackoverflow.com/questions/3911626/find-cycle-of-shortest-length-in-a-directed-graph-with-positive-weights   1 2 3 4 5 6 7 ...
Tuesday, April 27, 2021

SnakeAndLadder

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Link  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 4...

Employee architecture

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Link 题目大意应该是给雇主关系结构图， 是direct graph， 会给adjacent list， 好像允许有employee有>=1 boss。 一般首先会问这个关系是不是valid ？ 我个人的理解valid是两个条件: 1. 所有的node都在一个群， 有一个...