Create Codewars_Gradually_Adding_Parameters.js

revisualize · web-flow · commit 77b34f166343 · 2017-07-09T16:44:33.000-07:00
diff --git a/Codewars_Gradually_Adding_Parameters.js b/Codewars_Gradually_Adding_Parameters.js
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+/*
+Gradually Adding Parameters
+
+This kata is all about adding numbers.
+
+You will create a function named add. This function will return the sum of all the arguments. Sounds easy, doesn't it??
+
+Well here's the twist. The inputs will gradually increase with their index as parameter to the function.
+
+  add(3,4,5); 
+  /*
+  returns ( 3 * 1 ) + ( 4 * 2 ) + ( 5 * 3 ) = 26
+  */
+Remember the function will return 0 if no arguments are passed.
+
+Example
+
+  add(); //=> 0
+  add(1,2,3); //=> 14
+  add(1,4,-5,5); //=> 14
+*/
+
+
+function add() {
+  for (var i = 0, sum = 0; i < arguments.length; i++) {
+      sum += (arguments[i] * (i+1));
+  }
+  return sum;  
+}
+
+
+/*
+Time: 313ms Passed: 5 Failed: 0
+Test Results:
+Test Passed: Value == 0
+Test Passed: Value == 1400
+Test Passed: Value == 2
+Test Passed: Value == -8
+Test Passed: Value == -30
+You have passed all of the tests! :)
+*/
