- Added Swift solution to the "Zero Matrix" task of Challenge #068.

1 files changed, 90 insertions, 0 deletions

diff --git a/challenge-068/mohammad-anwar/swift/ch-1.swift b/challenge-068/mohammad-anwar/swift/ch-1.swift
new file mode 100644
index 0000000000..ea0c701008
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+++ b/challenge-068/mohammad-anwar/swift/ch-1.swift
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+import Foundation
+
+/*
+Perl Weekly Challenge - 068
+
+Task #1: Zero Matrix
+
+https://perlweeklychallenge.org/blog/perl-weekly-challenge-068
+*/
+
+enum ParamError: Error {
+    case missingRowsandCols
+    case missingCols
+}
+
+var rows:Int = 0
+var cols:Int = 0
+var matrix   = [[Int]]()
+
+do {
+    let paramCount:Int = Int(CommandLine.argc)
+
+    if paramCount <= 1 {
+        throw ParamError.missingRowsandCols
+    }
+    else if paramCount <= 2 {
+        throw ParamError.missingCols
+    }
+
+    rows   = Int(CommandLine.arguments[1])!
+    cols   = Int(CommandLine.arguments[2])!
+    matrix = generateMatrix(rows, cols)
+}
+catch ParamError.missingRowsandCols {
+    rows   = 3
+    cols   = 3
+    matrix = [[1, 0, 1], [1, 1, 1], [1, 0, 1]]
+}
+catch ParamError.missingCols {
+    rows   = Int(CommandLine.arguments[1])!
+    cols   = 3
+    matrix = generateMatrix(rows, cols)
+}
+
+var zeroMatrix:[[Int]] = initZeroMatrix(rows, cols)
+for r in 0..<rows {
+    for c in 0..<cols {
+        if matrix[r][c] == 0 {
+            // make zero row
+            for i in 0..<cols {
+                zeroMatrix[r][i] = 0
+            }
+            // make zero col
+            for j in 0..<rows {
+                zeroMatrix[j][c] = 0
+            }
+        }
+    }
+}
+
+print(zeroMatrix)
+
+
+// Functions
+
+func generateMatrix(_ rows:Int, _ cols:Int) -> [[Int]] {
+    var matrix = [[Int]]()
+    for _ in 1...rows {
+        var row:[Int] = []
+        for _ in 1...cols {
+            row.append(Int.random(in: 0..<2))
+        }
+        matrix.append(row)
+    }
+
+    return matrix
+}
+
+func initZeroMatrix(_ rows:Int, _ cols:Int) -> [[Int]] {
+    var matrix = [[Int]]()
+    for _ in 1...rows {
+        var row:[Int] = []
+        for _ in 1...cols {
+            row.append(1)
+        }
+        matrix.append(row)
+    }
+
+    return matrix
+}