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set tail as newNode if currentNode is the tail #1020

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set tail as newNode if currentNode is the tail #1020

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019c07e
set tail as newNode if currentNode is the tail
xyn22 Apr 8, 2023
dfdb6ec
test adjusting tail after insert at tail position
xyn22 Apr 8, 2023
a03f492
maintain current test coverage
xyn22 Apr 8, 2023
87c1dde
separate test for offset-based insert
xyn22 Apr 8, 2023
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separate test for offset-based insert
@xyn22
xyn22 committed Apr 8, 2023

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commit 87c1dde2ab5b8512b88f92949ffeb0ea3d9c2ab6
15 changes: 11 additions & 4 deletions src/data-structures/linked-list/__test__/LinkedList.test.js
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Original file line number Diff line number Diff line change
@@ -45,11 +45,18 @@ describe('LinkedList', () => {
linkedList.insert(10, 9);

expect(linkedList.toString()).toBe('1,4,2,3,10');
});

linkedList.insert(7, 5);
expect(linkedList.toString()).toBe('1,4,2,3,10,7');
expect(linkedList.head.toString()).toBe('1');
expect(linkedList.tail.toString()).toBe('7');
it('should insert and maintain head and tail', () => {
const linkedList = new LinkedList();

linkedList.insert(2, 0);
linkedList.insert(3, 1);
linkedList.insert(4, 2);

expect(linkedList.toString()).toBe('2,3,4');
expect(linkedList.head.toString()).toBe('2');
expect(linkedList.tail.toString()).toBe('4');
});

it('should delete node by value from linked list', () => {