while

Author: Maks3105

Exercises/1-for.js

@@ -1,9 +1,14 @@
 'use strict';
 
 const sum = (...args) => {
-  // Use for loop and accumulator variable
-  // to calculate sum of all given arguments
-  // For example sum(1, 2, 3) should return 6
+  let answer = 0;
+  const len = args.length;
+
+  for (let i = 0; i < len; ++i) {
+    answer += args[i];
+  }
+
+  return answer;
 };
 
 module.exports = { sum };

Exercises/2-for-of.js

@@ -1,9 +1,13 @@
 'use strict';
 
 const sum = (...args) => {
-  // Use for..of loop and accumulator variable
-  // to calculate sum of all given arguments
-  // For example sum(1, 2, 3) should return 6
+  let answer = 0;
+
+  for (const num of args) {
+    answer += num;
+  }
+
+  return answer;
 };
 
 module.exports = { sum };

Exercises/3-while.js

@@ -1,9 +1,15 @@
 'use strict';
 
 const sum = (...args) => {
-  // Use while loop and accumulator variable
-  // to calculate sum of all given arguments
-  // For example sum(1, 2, 3) should return 6
+  let answer = 0;
+  let num = args.pop();
+
+  while (num) {
+    answer += num;
+    num = args.pop();
+  }
+
+  return answer;
 };
 
 module.exports = { sum };

Exercises/4-do-while.js

@@ -1,9 +1,18 @@
 'use strict';
 
 const sum = (...args) => {
-  // Use do..while loop and accumulator variable
-  // to calculate sum of all given arguments
-  // For example sum(1, 2, 3) should return 6
+  let answer = 0;
+
+  do {
+    let num = args.pop();
+  } while (args.length > 0) {
+    answer += num;
+    num = args.pop();
+  }
+
+  return answer;
 };
 
+console.log(sum());
+
 module.exports = { sum };