update: gen binary numbers using queue

Author: ashokdey

src/_DataStructures_/Queue/generate-binary-number/index.js

@@ -0,0 +1,29 @@
+const Queue = require('../index');
+
+function generateBinaryNumber(n) {
+  const result = [];
+  const q = new Queue();
+
+  // add `1` to the queue
+  q.enqueue('1');
+
+  // iterate till the given number
+  for (let i = 0; i < n; i += 1) {
+    // push the item in the queue to the array
+    result.push(q.dequeue());
+
+    // append `0` & `1` respectively
+    const s1 = `${result[i]}0`;
+    const s2 = `${result[i]}1`;
+
+    // push the combinations in the queue
+    q.enqueue(s1);
+    q.enqueue(s2);
+  }
+  // return the result containing all the binary numbers
+  return result;
+}
+
+// console.log(generateBinaryNumber(5));
+
+module.exports = generateBinaryNumber;