Commit ae02ec2

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	`1`	`+import java.util.LinkedList`
	`2`	`+`
	`3`	`+class Solution {`
	`4`	`+ private fun subsetsMutable(`
	`5`	`+ nums: IntArray,`
	`6`	`+ i: Int,`
	`7`	`+ now: LinkedList<Int>,`
	`8`	`+ result: MutableList<List<Int>>,`
	`9`	`+ ) {`
	`10`	`+ if (i == nums.size) {`
	`11`	`+ @Suppress("UNCHECKED_CAST")`
	`12`	`+ result += now.clone() as List<Int>`
	`13`	`+ return`
	`14`	`+ }`
	`15`	`+`
	`16`	`+ subsetsMutable(nums, i + 1, now, result)`
	`17`	`+ now += nums[i]`
	`18`	`+ subsetsMutable(nums, i + 1, now, result)`
	`19`	`+ now.removeLast()`
	`20`	`+ }`
	`21`	`+`
	`22`	`+ fun subsets(nums: IntArray): List<List<Int>> {`
	`23`	`+ val result = mutableListOf<List<Int>>()`
	`24`	`+ subsetsMutable(nums, 0, LinkedList(), result)`
	`25`	`+`
	`26`	`+ return result`
	`27`	`+ }`
	`28`	`+}`

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