deepanshsachdeva / june-leetcoding-challenge

Repository for Java solutions of June Leetcoding Challenge

June Leetcoding Challenge

Week 1

1. Invert Binary Tree - Problem #226 ➡️ Solution
2. Delete Node in a Linked List - Problem #237 ➡️ Solution
3. Two City Scheduling - Problem #1029 ➡️ Solution
4. Reverse a string - Problem #344 ➡️ Solution
5. Random Pick with Weight - Problem #528 ➡️ Solution
6. Queue Reconstruction by Height - Problem #406 ➡️ Solution
7. Coin Change 2 - Problem #518 ➡️ Solution

Week 2

1. Power of Two - Problem #231 ➡️ Solution
2. Is Subsequence - Problem #392 ➡️ Solution
3. Search Insert Position - Problem #35 ➡️ Solution
4. Sort Colors - Problem #75 ➡️ Solution
5. Insert Delete GetRandom O(1) - Problem #380 ➡️ Solution
6. Largest Divisible Subset - Problem #368 ➡️ Solution
7. Cheapest Flights Within K Stops - Problem #787 ➡️ Solution

Week 3

1. Search in a Binary Search Tree - Problem #700 ➡️ Solution
2. Validate IP Address - Problem #468 ➡️ Solution
3. Surrounded Regions - Problem #130 ➡️ Solution
4. H-Index II - Problem #275 ➡️ Solution
5. Longest Duplicate Substring - Problem #1044 ➡️ Solution
6. Permutation Sequence - Problem #60 ➡️ Solution
7. Dungeon Game - Problem #174 ➡️ Solution

Week 4

1. Single Number II - Problem #137 ➡️ Solution
2. Count Complete Tree Nodes - Problem #222 ➡️ Solution
3. Unique Binary Search Trees - Problem #96 ➡️ Solution
4. Find the Duplicate Number - Problem #287 ➡️ Solution
5. Sum Root to Leaf Numbers - Problem #129 ➡️ Solution
6. Perfect Squares - Problem #279 ➡️ Solution
7. Reconstruct Itinerary - Problem #332 ➡️ Solution

Week 5

1. Unique Paths - Problem #62 ➡️ Solution
2. Word Search II - Problem #212 ➡️ Solution