A-M baby

Task/Matrix-transposition/JavaScript/matrix-transposition.js

@@ -0,0 +1,29 @@
+function Matrix(ary) {
+    this.mtx = ary
+    this.height = ary.length;
+    this.width = ary[0].length;
+}
+
+Matrix.prototype.toString = function() {
+    var s = []
+    for (var i = 0; i < this.mtx.length; i++)
+        s.push( this.mtx[i].join(",") );
+    return s.join("\n");
+}
+
+// returns a new matrix
+Matrix.prototype.transpose = function() {
+    var transposed = [];
+    for (var i = 0; i < this.width; i++) {
+        transposed[i] = [];
+        for (var j = 0; j < this.height; j++) {
+            transposed[i][j] = this.mtx[j][i];
+        }
+    }
+    return new Matrix(transposed);
+}
+
+var m = new Matrix([[1,1,1,1],[2,4,8,16],[3,9,27,81],[4,16,64,256],[5,25,125,625]]);
+print(m);
+print();
+print(m.transpose());