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feat: add typescript solution to lc problem: No.2095

No.2095.Delete the Middle Node of a Linked List

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Lines changed: 21 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -123,7 +123,28 @@ class Solution {`
`123`	`123`	`<!-- 这里可写当前语言的特殊实现逻辑 -->`
`124`	`124`
`125`	`125`	```ts
	`126`	`+/**`
	`127`	`+ * Definition for singly-linked list.`
	`128`	`+ * class ListNode {`
	`129`	`+ * val: number`
	`130`	`+ * next: ListNode \| null`
	`131`	`+ * constructor(val?: number, next?: ListNode \| null) {`
	`132`	`+ * this.val = (val===undefined ? 0 : val)`
	`133`	`+ * this.next = (next===undefined ? null : next)`
	`134`	`+ * }`
	`135`	`+ * }`
	`136`	`+ */`
`126`	`137`
	`138`	`+function deleteMiddle(head: ListNode \| null): ListNode \| null {`
	`139`	`+ if (!head \|\| !head.next) return null;`
	`140`	`+ let fast = head.next, slow = head;`
	`141`	`+ while (fast.next && fast.next.next) {`
	`142`	`+ slow = slow.next;`
	`143`	`+ fast = fast.next.next;`
	`144`	`+ }`
	`145`	`+ slow.next = slow.next.next;`
	`146`	`+ return head;`
	`147`	`+};`
`127`	`148`	```
`128`	`149`
`129`	`150`	`### ...`

Lines changed: 21 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -106,7 +106,28 @@ class Solution {`
`106`	`106`	`### TypeScript`
`107`	`107`
`108`	`108`	```ts
	`109`	`+/**`
	`110`	`+ * Definition for singly-linked list.`
	`111`	`+ * class ListNode {`
	`112`	`+ * val: number`
	`113`	`+ * next: ListNode \| null`
	`114`	`+ * constructor(val?: number, next?: ListNode \| null) {`
	`115`	`+ * this.val = (val===undefined ? 0 : val)`
	`116`	`+ * this.next = (next===undefined ? null : next)`
	`117`	`+ * }`
	`118`	`+ * }`
	`119`	`+ */`
`109`	`120`
	`121`	`+function deleteMiddle(head: ListNode \| null): ListNode \| null {`
	`122`	`+ if (!head \|\| !head.next) return null;`
	`123`	`+ let fast = head.next, slow = head;`
	`124`	`+ while (fast.next && fast.next.next) {`
	`125`	`+ slow = slow.next;`
	`126`	`+ fast = fast.next.next;`
	`127`	`+ }`
	`128`	`+ slow.next = slow.next.next;`
	`129`	`+ return head;`
	`130`	`+};`
`110`	`131`	```
`111`	`132`
`112`	`133`	`### ...`

Lines changed: 22 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,22 @@`
	`1`	`+/**`
	`2`	`+ * Definition for singly-linked list.`
	`3`	`+ * class ListNode {`
	`4`	`+ * val: number`
	`5`	`+ * next: ListNode \| null`
	`6`	`+ * constructor(val?: number, next?: ListNode \| null) {`
	`7`	`+ * this.val = (val===undefined ? 0 : val)`
	`8`	`+ * this.next = (next===undefined ? null : next)`
	`9`	`+ * }`
	`10`	`+ * }`
	`11`	`+ */`
	`12`	`+`
	`13`	`+ function deleteMiddle(head: ListNode \| null): ListNode \| null {`
	`14`	`+ if (!head \|\| !head.next) return null;`
	`15`	`+ let fast = head.next, slow = head;`
	`16`	`+ while (fast.next && fast.next.next) {`
	`17`	`+ slow = slow.next;`
	`18`	`+ fast = fast.next.next;`
	`19`	`+ }`
	`20`	`+ slow.next = slow.next.next;`
	`21`	`+ return head;`
	`22`	`+};`

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