pjsfirstlaw的博客

Week2 Array question source: Container With Most Water question description Given n non-negative integers a1, a2, …, an , where each represents a point at coordinate (i, ai). n vertical lines ar...

Week6 Graph question source: K-Similary Strings question description Strings A and B are K-similar (for some non-negative integer K) if we can swap the positions of two letters in A exactly K times so...

Week5 Graph question source: Find Eventual Safe States question description In a directed graph, we start at some node and every turn, walk along a directed edge of the graph. If we reach a node that...

Week4 上周犯了个小错误，在写第3周的博客时，不小心直接在第2周的博客上改了，然后第2周的博客直接被第3周的覆盖了，所以这周写2篇补回来。 Graph question source: Network Delay Time question description There are N network nodes, labelled 1 to N. Given times, a list o...

Week4(2) 上周犯了个小错误，在写第3周的博客时，不小心直接在第2周的博客上改了，然后第2周的博客直接被第3周的覆盖了，所以这周写2篇补回来。 Graph question source: Is Graph Bipartite? question description Given an undirected graph, return true if and only if it is b...

Week7 Greedy question source: Jump Game question description Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents...