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feat: add swift implementation to lcci problem: No.08.10 #2696

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Merged
yanglbme merged 1 commit into doocs:main from klever34:swift-impl-lcci-0810
Apr 30, 2024
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27 changes: 27 additions & 0 deletions lcci/08.10.Color Fill/README.md
View file Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -192,6 +192,33 @@ impl Solution {
}
```

```swift
class Solution {
private var dirs = [-1, 0, 1, 0, -1]
private var image: [[Int]] = []
private var nc: Int = 0
private var oc: Int = 0

func floodFill(_ image: inout [[Int]], _ sr: Int, _ sc: Int, _ newColor: Int) -> [[Int]] {
self.nc = newColor
self.oc = image[sr][sc]
self.image = image
dfs(sr, sc)
return self.image
}

private func dfs(_ i: Int, _ j: Int) {
if i < 0 || i >= image.count || j < 0 || j >= image[0].count || image[i][j] != oc || image[i][j] == nc {
return
}
image[i][j] = nc
for k in 0..<4 {
dfs(i + dirs[k], j + dirs[k + 1])
}
}
}
```

<!-- tabs:end -->

### 方法二:BFS
Expand Down
27 changes: 27 additions & 0 deletions lcci/08.10.Color Fill/README_EN.md
View file Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -199,6 +199,33 @@ impl Solution {
}
```

```swift
class Solution {
private var dirs = [-1, 0, 1, 0, -1]
private var image: [[Int]] = []
private var nc: Int = 0
private var oc: Int = 0

func floodFill(_ image: inout [[Int]], _ sr: Int, _ sc: Int, _ newColor: Int) -> [[Int]] {
self.nc = newColor
self.oc = image[sr][sc]
self.image = image
dfs(sr, sc)
return self.image
}

private func dfs(_ i: Int, _ j: Int) {
if i < 0 || i >= image.count || j < 0 || j >= image[0].count || image[i][j] != oc || image[i][j] == nc {
return
}
image[i][j] = nc
for k in 0..<4 {
dfs(i + dirs[k], j + dirs[k + 1])
}
}
}
```

<!-- tabs:end -->

### Solution 2: BFS
Expand Down
24 changes: 24 additions & 0 deletions lcci/08.10.Color Fill/Solution.swift
View file Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,24 @@
class Solution {
private var dirs = [-1, 0, 1, 0, -1]
private var image: [[Int]] = []
private var nc: Int = 0
private var oc: Int = 0

func floodFill(_ image: inout [[Int]], _ sr: Int, _ sc: Int, _ newColor: Int) -> [[Int]] {
self.nc = newColor
self.oc = image[sr][sc]
self.image = image
dfs(sr, sc)
return self.image
}

private func dfs(_ i: Int, _ j: Int) {
if i < 0 || i >= image.count || j < 0 || j >= image[0].count || image[i][j] != oc || image[i][j] == nc {
return
}
image[i][j] = nc
for k in 0..<4 {
dfs(i + dirs[k], j + dirs[k + 1])
}
}
}

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