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update: gen binary numbers using queue

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Original file line number	Diff line number	Diff line change
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	`1`	`+const Queue = require('../index');`
	`2`	`+`
	`3`	`+function generateBinaryNumber(n) {`
	`4`	`+ const result = [];`
	`5`	`+ const q = new Queue();`
	`6`	`+`
	`7`	+ // add `1` to the queue
	`8`	`+ q.enqueue('1');`
	`9`	`+`
	`10`	`+ // iterate till the given number`
	`11`	`+ for (let i = 0; i < n; i += 1) {`
	`12`	`+ // push the item in the queue to the array`
	`13`	`+ result.push(q.dequeue());`
	`14`	`+`
	`15`	+ // append `0` & `1` respectively
	`16`	+ const s1 = `${result[i]}0`;
	`17`	+ const s2 = `${result[i]}1`;
	`18`	`+`
	`19`	`+ // push the combinations in the queue`
	`20`	`+ q.enqueue(s1);`
	`21`	`+ q.enqueue(s2);`
	`22`	`+ }`
	`23`	`+ // return the result containing all the binary numbers`
	`24`	`+ return result;`
	`25`	`+}`
	`26`	`+`
	`27`	`+// console.log(generateBinaryNumber(5));`
	`28`	`+`
	`29`	`+module.exports = generateBinaryNumber;`

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