Commit d56af71

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feat: 203.remove-linked-list-elements add Python3 implementation (azl397985856#124)

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Original file line number	Diff line number	Diff line change
`@@ -33,13 +33,13 @@ if (!next \|\| next.val !== val) {`
`33`	`33`
`34`	`34`	```
`35`	`35`
`36`		`-`
`37`	`36`	`## 代码`
`38`	`37`
`39`		-```js
`40`		`-`
	`38`	`+* 语言支持:JS,Python`
`41`	`39`
	`40`	`+Javascript Code:`
`42`	`41`
	`42`	+```js
`43`	`43`	`/*`
`44`	`44`	`* @lc app=leetcode id=203 lang=javascript`
`45`	`45`	`*`
`@@ -54,14 +54,14 @@ if (!next \|\| next.val !== val) {`
`54`	`54`	`* Testcase Example: '[1,2,6,3,4,5,6]\n6'`
`55`	`55`	`*`
`56`	`56`	`* Remove all elements from a linked list of integers that have value val.`
`57`		`- *`
	`57`	`+ *`
`58`	`58`	`* Example:`
`59`		`- *`
`60`		`- *`
	`59`	`+ *`
	`60`	`+ *`
`61`	`61`	`* Input: 1->2->6->3->4->5->6, val = 6`
`62`	`62`	`* Output: 1->2->3->4->5`
`63`		`- *`
`64`		`- *`
	`63`	`+ *`
	`64`	`+ *`
`65`	`65`	`*/`
`66`	`66`	`/**`
`67`	`67`	`* Definition for singly-linked list.`
`@@ -95,6 +95,26 @@ var removeElements = function(head, val) {`
`95`	`95`
`96`	`96`	`return dummy.next;`
`97`	`97`	`};`
`98`		`-`
`99`	`98`	```
`100`	`99`
	`100`	`+Python Code:`
	`101`	`+`
	`102`	+```python
	`103`	`+# Definition for singly-linked list.`
	`104`	`+# class ListNode:`
	`105`	`+# def __init__(self, x):`
	`106`	`+# self.val = x`
	`107`	`+# self.next = None`
	`108`	`+`
	`109`	`+class Solution:`
	`110`	`+ def removeElements(self, head: ListNode, val: int) -> ListNode:`
	`111`	`+ prev = ListNode(0)`
	`112`	`+ prev.next = head`
	`113`	`+ cur = prev`
	`114`	`+ while cur.next:`
	`115`	`+ if cur.next.val == val:`
	`116`	`+ cur.next = cur.next.next`
	`117`	`+ else:`
	`118`	`+ cur = cur.next`
	`119`	`+ return prev.next`
	`120`	+```

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