A-M baby

Task/Matrix-exponentiation-operator/JavaScript/matrix-exponentiation-operator.js

@@ -0,0 +1,26 @@
+// IdentityMatrix is a "subclass" of Matrix
+function IdentityMatrix(n) {
+    this.height = n;
+    this.width = n;
+    this.mtx = [];
+    for (var i = 0; i < n; i++) {
+        this.mtx[i] = [];
+        for (var j = 0; j < n; j++) {
+            this.mtx[i][j] = (i == j ? 1 : 0);
+        }
+    }
+}
+IdentityMatrix.prototype = Matrix.prototype;
+
+// the Matrix exponentiation function
+// returns a new matrix
+Matrix.prototype.exp = function(n) {
+    var result = new IdentityMatrix(this.height);
+    for (var i = 1; i <= n; i++) {
+        result = result.mult(this);
+    }
+    return result;
+}
+
+var m = new Matrix([[3, 2], [2, 1]]);
+[0,1,2,3,4,10].forEach(function(e){print(m.exp(e)); print()})