Archive - SWE Prep

Count Largest Group

Lessons Learned: HashMaps

Apr 23, 2021 •

Invert Binary Tree

Question: Invert a binary tree.

Apr 14, 2021 •

Alice and Bob take turns playing a game, with Alice starting first.

Apr 7, 2021 •

March 2021

February 2021

Valid Parentheses II

Question: Implement an algorithm to print all valid (properly opened and closed) combinations of n pairs of parentheses.

Feb 28, 2021 •

Median of Two Sorted Arrays

Lessons Learned: Array parsing

Feb 21, 2021 •

The problem: Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to end.

Feb 14, 2021 •

Lessons learned: DFS

Feb 4, 2021 •

January 2021

Question: Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictionary…

Jan 27, 2021 •

Longest Palindromic Substring

Jan 22, 2021 •

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