Commit 3057743

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217. Contains Duplicate

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	`1`	`+class Solution {`
	`2`	`+ fun containsDuplicate(nums: IntArray): Boolean {`
	`3`	`+ val set = mutableSetOf<Int>()`
	`4`	`+ for(num in nums){`
	`5`	`+ if(num in set){`
	`6`	`+ return true`
	`7`	`+ }`
	`8`	`+ set.add(num)`
	`9`	`+ }`
	`10`	`+ return false`
	`11`	`+ }`
	`12`	`+}`

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