Commit cc29c56

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fix: peek() should show the front item of queue

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+13

-12

lines changed

+13

-12

lines changed

Lines changed: 11 additions & 10 deletions

Original file line number	Diff line number	Diff line change
`@@ -12,23 +12,24 @@ describe('Data Structure : Queue', () => {`
`12`	`12`	`queue = new Queue();`
`13`	`13`	`});`
`14`	`14`
`15`		`- it('Should add() element to a queue', () => {`
`16`		`- queue.add(5);`
`17`		`- expect(queue.data).toEqual([5]);`
	`15`	`+ it('Should enqueue() element to a queue', () => {`
	`16`	`+ queue.enqueue(5);`
	`17`	`+ expect(queue.peek()).toEqual([5]);`
`18`	`18`	`});`
`19`	`19`
`20`		`- it('Should remove() an element from the queue', () => {`
`21`		`- queue.add(2);`
`22`		`- queue.add(3);`
	`20`	`+ it('Should dequeue() an element from the queue', () => {`
	`21`	`+ queue.enqueue(2);`
	`22`	`+ queue.enqueue(3);`
`23`	`23`
`24`		`- expect(queue.remove()).toEqual(2);`
`25`		`- expect(queue.data).toEqual([3]);`
	`24`	`+ expect(queue.dequeue()).toEqual(2);`
	`25`	`+ expect(queue.peek()).toEqual(3);`
	`26`	`+ expect(queue.size()).toEqual(1);`
`26`	`27`	`});`
`27`	`28`
`28`	`29`	`describe('peek()', () => {`
`29`	`30`	`beforeEach(() => {`
`30`		`- queue.add(2);`
`31`		`- queue.add(5);`
	`31`	`+ queue.enqueue(2);`
	`32`	`+ queue.enqueue(5);`
`32`	`33`	`});`
`33`	`34`
`34`	`35`	`it('Should return the elemet to be removed using peek()', () => {`

Lines changed: 2 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -17,7 +17,7 @@ class Queue extends SinglyLinkedLists {`
`17`	`17`	`}`
`18`	`18`
`19`	`19`	`peek() {`
`20`		`- return this.getLast();`
	`20`	`+ return this.getFirst();`
`21`	`21`	`}`
`22`	`22`
`23`	`23`	`size() {`
`@@ -41,7 +41,7 @@ class Queue extends SinglyLinkedLists {`
`41`	`41`	`throw new Error(this.NotAllowed);`
`42`	`42`	`}`
`43`	`43`
`44`		`- getFirst() {`
	`44`	`+ getLast() {`
`45`	`45`	`throw new Error(this.NotAllowed);`
`46`	`46`	`}`
`47`	`47`

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