Simple Adding.js

Author: Ajit24

Simple Adding.js

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+// Step By Step Iterative Solution
+function SimpleAdding (num) {
+    // Declare a variable to hold our answer
+    var sum = 0;
+  
+    // Loop through all numbers between num and 1 inclusive...
+    for (var i = num; i > 0; i--) {
+      // ...adding i to our answer each time.
+      sum += i;
+    }
+    // Finally, we return our answer.
+    return sum;
+  }
+  
+  // Step By Step Recursive Solution
+  
+  function SimpleAdding (num, sum) {
+    // If no argument is passed for sum (Coderbyte will always only pass 1 argument into our function), we set it to 0
+    sum = sum || 0;
+  
+    // Next, we set our base case to stop the function from recursing when our input number equals 0...
+    if (num === 0) {
+      // ...and return our answer
+      return sum;
+    }
+  
+    // Each time we recurse through our function, we add the number to our sum variable (sum += num)...
+    sum += num;
+    // ...and decrease num by 1 using the decrement operator
+    num--;
+  
+    // We return the function again and continue to add num to curSum and decrement num by 1 until num reaches 0.
+    return SimpleAdding(num, sum);
+  }