Turn what you know into code. Work through a problem, test your thinking, and build a little more confidence.
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| Status | Problem | Difficulty | Est. time | Save |
|---|---|---|---|---|
| Two Sum | easy | 20 min | ||
| Valid Anagram | easy | 15 min | ||
| Group Anagrams +1 | medium | 30 min | ||
| Valid Palindrome | easy | 20 min | ||
| Two Sum II — Input Array Is Sorted | medium | 25 min | ||
| Container With Most Water | medium | 30 min | ||
| Maximum Average Subarray I | easy | 20 min | ||
| Longest Substring Without Repeating Characters +1 | medium | 30 min | ||
| Minimum Size Subarray Sum | medium | 30 min | ||
| Fibonacci Number | easy | 20 min | ||
| Pow(x, n) | medium | 30 min | ||
| Find Numbers with Even Number of Digits | easy | 15 min | ||
| Search Insert Position | easy | 20 min | ||
| First Bad Version | easy | 20 min | ||
| Search in Rotated Sorted Array | medium | 30 min | ||
| Koko Eating Bananas | medium | 35 min | ||
| Merge Sorted Array | easy | 25 min | ||
| Sort Colors | medium | 25 min | ||
| Sort an Array | medium | 35 min | ||
| Largest Number | medium | 35 min | ||
| Reverse Linked List | easy | 25 min | ||
| Merge Two Sorted Lists | easy | 25 min | ||
| Remove Nth Node From End of List | medium | 30 min | ||
| Valid Parentheses | easy | 20 min | ||
| Min Stack | medium | 30 min | ||
| Daily Temperatures | medium | 30 min | ||
| Implement Queue Using Stacks +1 | easy | 30 min | ||
| Design Circular Queue +1 | medium | 35 min | ||
| Sliding Window Maximum +1 | hard | 40 min |
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