Update hw4 to a newer version.

Signed-off-by: jmug <u.g.a.mariano@gmail.com>

hw4/hw4programs/no_of_fac.oat

@@ -0,0 +1,39 @@
+int mod (int a, int b) {
+  var t = a;
+  while (t - b >= 0) {
+      t = t - b;
+  }
+  return t;
+}
+
+int div (int a, int b) {
+  var result = 0;
+  var num = a;
+  var denom = b;
+  while (num > 0) {
+  	num = num - denom;
+  	result = result + 1;
+  }
+  return result;
+}
+
+int no_of_factors(int n) {
+  var num_fact = 1;
+  var input = n;
+  for (var i = 2; i * i < input + 1; i=i+1;) {
+    var power = 0;
+    while (mod(n, i) == 0) {
+      n = div(n, i);
+      power = power + 1;
+    }
+    num_fact = num_fact * (power + 1);
+  }
+  if (n > 1) {
+    num_fact = num_fact * 2;
+  }
+  return num_fact;
+}
+
+int program (int argc, string[] argv) {
+  return no_of_factors(6400);
+}