Leetcode Workout Solutions

The best time to plant a tree was 20 years ago. The second best time is now.

Table of Contents

• 1. Two Sum *
• 2. Add Two Numbers
• 3. Longest Substring Without Repeating Characters *
• 4. Median of Two Sorted Arrays
• 5. Longest Palindromic Substring
• 6. Zigzag Conversion
• 7. Reverse Integer
• 8. String to Integer (atoi)
• 9. Palindrome Number
• 10. Regular Expression Matching
• 11. Container With Most Water *
• 12. Integer to Roman
• 13. Roman to Integer
• 14. Longest Common Prefix
• 15. 3Sum *
• 39. Combination Sum *
• 49. Group Anagrams *
• 70. Climbing Stairs
• 121. Best Time to Buy and Sell Stock *
• 125. Valid Palindrome *
• 128. Longest Consecutive Sequence *
• 167. Two Sum II - Input Array Is Sorted
• 217. Contains Duplicate *
• 238. Product of Array Except Self *
• 242. Valid Anagram *
• 347. Top K Frequent Elements *
• 746. Min Cost Climbing Stairs

Blind 75 List *

• Arrays & Hashing
  • 217. Contains Duplicate *
  • 242. Valid Anagram *
  • 1. Two Sum *
  • 49. Group Anagrams *
  • 347. Top K Frequent Elements *
  • 238. Product of Array Except Self *
  • Encode and Decode Strings
  • 128. Longest Consecutive Sequence *
• Two Pointers
  • 125. Valid Palindrome *
  • 15. 3Sum *
  • 11. Container With Most Water *
• Sliding Window
  • 121. Best Time to Buy and Sell Stock *
  • 3. Longest Substring Without Repeating Characters *
• Backtracking
  • 39. Combination Sum *