workatcam/leetcode

Leetcode Prep

Previous Interview (Feb)

GitPod, Google Docs

LeetCode Interview Questions Preparation

Week 1: Data Structure (familiar with Stack)

• 242 Valid Anagram https://leetcode.com/problems/valid-anagram/ (Hash Table)
• 133 Clone Graph https://leetcode.com/problems/clone-graph/ (Hash Table)
• 127 Word Ladder https://leetcode.com/problems/word-la... (Hash Table)
• 155 Min Stack https://leetcode.com/problems/min-stack/ (Stack or double linked list)
• 225 Implement Stack using Queues https://leetcode.com/problems/implement-stack-using-queues/ (Stack / Queue)
• 215 Kth Largest Element in an Array - Heap https://leetcode.com/problems/kth-lar... (PriorityQueue)
• 23 Merge k Sorted Lists - Heap https://leetcode.com/problems/merge-k... (PriorityQueue)

Day 1 (20 mins):

• 225 Implement Stack using Queues https://leetcode.com/problems/implement-stack-using-queues/ (Stack / Queue)
• Youtube: https://youtu.be/PFZybl3VEV4
• My code: https://github.com/workatcam/leetcode/blob/main/DS/225-Implement-Stack-using-Queues-01.py

Day 2 (1.5 h + day2):

• 242 Valid Anagram https://leetcode.com/problems/valid-anagram/ (Hash Table)
• My code: https://github.com/workatcam/leetcode/blob/main/DS/242-Valid-Anagram-Dictionary.py

Day 3 (Medium)

• 133 Clone Graph https://leetcode.com/problems/clone-graph/
  • It's a bit hard for me but I think it should be worth it