| title | type |
|---|---|
Math |
docs |
| Title | Solution | Difficulty | Time | Space | 收藏 |
|---|---|---|---|---|---|
| 2. Add Two Numbers | [Go]({{< relref "/ChapterFour/0002.Add-Two-Numbers.md" >}}) | Medium | O(n) | O(1) | |
| 50. Pow(x, n) | [Go]({{< relref "/ChapterFour/0050.Powx-n.md" >}}) | Medium | O(log n) | O(1) | |
| 60. Permutation Sequence | [Go]({{< relref "/ChapterFour/0060.Permutation-Sequence.md" >}}) | Medium | O(n log n) | O(1) | |
| 69. Sqrt(x) | [Go]({{< relref "/ChapterFour/0069.Sqrtx.md" >}}) | Easy | O(log n) | O(1) | |
| 202. Happy Number | [Go]({{< relref "/ChapterFour/0202.Happy-Number.md" >}}) | Easy | O(log n) | O(1) | |
| 224. Basic Calculator | [Go]({{< relref "/ChapterFour/0224.Basic-Calculator.md" >}}) | Hard | O(n) | O(n) | |
| 231. Power of Two | [Go]({{< relref "/ChapterFour/0231.Power-of-Two.md" >}}) | Easy | O(1) | O(1) | |
| 263. Ugly Number | [Go]({{< relref "/ChapterFour/0263.Ugly-Number.md" >}}) | Easy | O(log n) | O(1) | |
| 326. Power of Three | [Go]({{< relref "/ChapterFour/0326.Power-of-Three.md" >}}) | Easy | O(1) | O(1) | |
| 343. Integer Break | [Go]({{< relref "/ChapterFour/0343.Integer-Break.md" >}}) | Medium | O(n^2) | O(n) | |
| 357. Count Numbers with Unique Digits | [Go]({{< relref "/ChapterFour/0357.Count-Numbers-with-Unique-Digits.md" >}}) | Medium | O(1) | O(1) | |
| 628. Maximum Product of Three Numbers | [Go]({{< relref "/ChapterFour/0628.Maximum-Product-of-Three-Numbers.md" >}}) | Easy | O(n) | O(1) | |
| 885. Spiral Matrix III | [Go]({{< relref "/ChapterFour/0885.Spiral-Matrix-III.md" >}}) | Medium | O(n^2) | O(1) | |
| 891. Sum of Subsequence Widths | [Go]({{< relref "/ChapterFour/0891.Sum-of-Subsequence-Widths.md" >}}) | Hard | O(n log n) | O(1) | |
| 942. DI String Match | [Go]({{< relref "/ChapterFour/0942.DI-String-Match.md" >}}) | Easy | O(n) | O(1) | |
| 976. Largest Perimeter Triangle | [Go]({{< relref "/ChapterFour/0976.Largest-Perimeter-Triangle.md" >}}) | Easy | O(n log n) | O(log n) | |
| 996. Number of Squareful Arrays | [Go]({{< relref "/ChapterFour/0996.Number-of-Squareful-Arrays.md" >}}) | Hard | O(n log n) | O(n) | |
| 1025. Divisor Game | [Go]({{< relref "/ChapterFour/1025.Divisor-Game.md" >}}) | Easy | O(1) | O(1) | |
| --------------------------------------- | --------------------------------- | -------------------------- | ----------------------- | ----------- | -------- |