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Commit1666c3a

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fix error in SinglyLinkedList head method (TheAlgorithms#1322)
* fix error in SinglyLinkedList head method* test: update check head test for SinglyLinkedList* fix: code style error* fix: remove extra semicolons---------Co-authored-by: Bekzod <bekzodisakov18@gmail.com>
1 parent331a4d2 commit1666c3a

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2 files changed

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‎Data-Structures/Linked-List/SinglyLinkedList.js

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@@ -40,12 +40,12 @@ class LinkedList {
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// Returns the head
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head(){
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returnthis.headNode?.data||null
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returnthis.headNode?.data??null
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}
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// Returns the tail
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tail(){
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returnthis.tailNode?.data||null
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returnthis.tailNode?.data??null
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}
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// Return if the list is empty

‎Data-Structures/Linked-List/test/SinglyLinkedList.test.js

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Original file line numberDiff line numberDiff line change
@@ -148,6 +148,10 @@ describe('SinglyLinkedList', () => {
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list.addFirst(30)
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expect(list.head()).toBe(30)
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// check for a falsy head data
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list.addFirst(false)
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expect(list.head()).toBe(false)
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})
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it('Check tail',()=>{
@@ -162,6 +166,10 @@ describe('SinglyLinkedList', () => {
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list.addFirst(30)
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expect(list.tail()).toBe(20)
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// check for a falsy tail data
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list.addLast(false)
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expect(list.tail()).toBe(false)
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})
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it('Check size',()=>{

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