Data commit

Task/Matrix-transposition/Kotlin/matrix-transposition.kotlin

@@ -0,0 +1,24 @@
+// version 1.1.3
+
+typealias Vector = DoubleArray
+typealias Matrix = Array<Vector>
+
+fun Matrix.transpose(): Matrix {
+    val rows = this.size
+    val cols = this[0].size
+    val trans = Matrix(cols) { Vector(rows) }
+    for (i in 0 until cols) {
+        for (j in 0 until rows) trans[i][j] = this[j][i]
+    }
+    return trans
+}
+
+// Alternate version
+typealias Matrix<T> = List<List<T>>
+fun <T> Matrix<T>.transpose(): Matrix<T> {
+    return (0 until this[0].size).map { x ->
+        (this.indices).map { y ->
+            this[y][x]
+        }
+    }
+}