Create 0073-set-matrix-zeroes.swift

Author: drxlx

swift/0073-set-matrix-zeroes.swift

@@ -0,0 +1,39 @@
+class Solution {
+    func setZeroes(_ matrix: inout [[Int]]) {
+        let rows = matrix.count, cols = matrix[0].count
+        var rowZero = false
+
+        for r in 0..<rows {
+            for c in 0..<cols {
+                if matrix[r][c] == 0 {
+                    matrix[0][c] = 0
+                    if r > 0 {
+                        matrix[r][0] = 0
+                    } else {
+                        rowZero = true
+                    }
+                }
+            }
+        }
+
+        for r in 1..<rows {
+            for c in 1..<cols {
+                if matrix[0][c] == 0 || matrix[r][0] == 0 {
+                    matrix[r][c] = 0
+                }
+            }
+        }
+
+        if matrix[0][0] == 0 {
+            for r in 0..<rows {
+                matrix[r][0] = 0
+            }
+        }
+
+        if rowZero {
+            for c in 0..<cols {
+                matrix[0][c] = 0
+            }
+        }
+    }
+}