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添加 0027.移除元素.md Scala版本

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Original file line number	Diff line number	Diff line change
`@@ -328,6 +328,20 @@ int removeElement(int* nums, int numsSize, int val){`
`328`	`328`	`return slow;`
`329`	`329`	`}`
`330`	`330`	```
`331`		`-`
	`331`	`+Scala:`
	`332`	+```scala
	`333`	`+object Solution {`
	`334`	+ def removeElement(nums: Array[Int], `val`: Int): Int = {
	`335`	`+ var slow = 0`
	`336`	`+ for (fast <- 0 until nums.length) {`
	`337`	+ if (`val` != nums(fast)) {
	`338`	`+ nums(slow) = nums(fast)`
	`339`	`+ slow += 1`
	`340`	`+ }`
	`341`	`+ }`
	`342`	`+ slow`
	`343`	`+ }`
	`344`	`+}`
	`345`	+```
`332`	`346`	`-----------------------`
`333`	`347`	`<div align="center"><img src=https://code-thinking.cdn.bcebos.com/pics/01二维码一.jpg width=500> </img></div>`

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