Add javascript implementation for rp

Russian_Peasant/Javascript/ZoranPandovski/rusian_peasant.js

@@ -0,0 +1,33 @@
+'use strict'
+
+const russian_peasant = function(num1,num2){
+    let x = num1,
+        y = num2,
+        sum = 0;
+    while(x > 0){
+        if(x % 2 == 1){
+            sum+=y;
+        }
+        x = x >> 1;
+        y = y << 1;
+    }
+
+    return sum;
+}
+
+//test
+
+const assert = function(condition, message) {
+    if (!condition) {
+        message = message || "Assertion failed";
+        if (typeof Error !== "undefined") {
+            throw new Error(message);
+        }
+        throw message; // Fallback
+    }
+}
+
+const num1 = 12;
+const num2 = 10;
+const result = russian_peasant(num1,num2)
+assert(result === 120);