- A collection of challenges and exercises written in C++.
| # | Problem | Solution | Time | Space | Difficulty |
|---|---|---|---|---|---|
| 0066 | Plus One | 1st | O(n) | O(1) | Easy |
| 0169 | Majority Element | C++ | O(n) | O(1) | Easy |
| 0238 | Product of Array Except Self | 1st | O(n) | O(1) | Medium |
| 0724 | Find Pivot Index | 1st | O(n) | O(1) | Easy |
| 0747 | Largest Number At Least Twice of Others | 1st | O(n) | O(1) | Easy |
| 1413 | Minimum Value to Get Positive Step by Step Sum | 1st | O(n) | O(1) | Easy |
| 1414 | Find the Minimum Number of Fibonacci Numbers Whose Sum is K | 1st | O(n) | O(1) | Medium |
| # | Problem | Solution | Time | Space | Difficulty |
|---|---|---|---|---|---|
| 0278 | First Bad Version | 1st | O(logn) | O(1) | Easy |
| # | Problem | Solution | Time | Space | Difficulty |
|---|---|---|---|---|---|
| 0476 | Number Complement | C++ | O(n) | O(n) |
| # | Problem | Solution | Time | Space | Difficulty |
|---|---|---|---|---|---|
| 0383 | Ransom Note C++ | O(n+m) | O(n) | Easy | |
| 1108 | Defanging an IP Address | 1st | O(n) | O(1) | Easy |
| # | Problem | Solution | Time | Space | Difficulty |
|---|---|---|---|---|---|
| 0064 | Minimum Path Sum | 1st | O(m * n) | O(m + n) | Medium |
| # | Problem | Solution | Time | Space | Difficulty |
|---|---|---|---|---|---|
| 0387 | First Unique Character in a String | C++ | O(n) | O(1) | |
| 0771 | Jewels and Stones | 1st | O(n^2) | O(1) | Easy |
| Day | Problem | Solution | Time | Space |
|---|---|---|---|---|
| 14 | Perform String Shifts | 1st | ||
| 15 | Product of Array Except Self | 1st | ||
| 16 | Minimum Path Sum | 1st | O(m * n) | O(m + n) |
| Day | Problem | Solution | Time | Space |
|---|---|---|---|---|
| 1 | First Bad Version | 1st | O(logn) | O(1) |
| 2 | Jewels and Stones | 1st | O(nm) | O(1) |
| 3 | Ransom Note C++ | O(n+m) | O(n) | |
| 4 | Number Complement | C++ | O(n) | O(n) |
| 5 | First Unique Character in a String | C++ | O(n) | O(1) |
| 6 | Majority Element | C++ | O(n) | O(1) |
| Day | Problem | Solution | Difficulty |
|---|---|---|---|
| 0 | Hello, World. | 1st | Easy |
| 1 | Data Types | 1st | Easy |
| 2 | Operators | 1st | Easy |
| 3 | Intro to Conditional Statements | 1st | Easy |
| 4 | Class vs. Instance | 1st | Easy |
| 5 | Loops | 1st | Easy |
| 6 | Let's Review | 1st | Easy |
| 7 | Arrays | 1st | Easy |
| 8 | Dictionaries and Maps | 1st | Easy |
| 9 | Recusion | 1st | Easy |
| 10 | Binary Numbers | 1st | Easy |
| 11 | 2D Arrays | 1st | Easy |
| Problem | Solution |
|---|---|
| Half of a Square | 1st |
| # | Problem | Solution | Time | Space | Difficulty |
|---|---|---|---|---|---|
| 977A | Wrong Subtraction | 1st | O(n) | O(1) | 500 |