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643. Maximum Average Subarray I

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	`1`	`+class Solution {`
	`2`	`+ fun findMaxAverage(nums: IntArray, k: Int): Double {`
	`3`	`+ var sum = 0`
	`4`	`+`
	`5`	`+ for (i in 0 until k) {`
	`6`	`+ sum += nums[i]`
	`7`	`+ }`
	`8`	`+ var maxSum = sum`
	`9`	`+ for (i in k until nums.size) {`
	`10`	`+ sum = sum - nums[i - k] + nums[i]`
	`11`	`+ maxSum = maxOf(maxSum, sum)`
	`12`	`+ }`
	`13`	`+ return maxSum.toDouble()/ k`
	`14`	`+ }`
	`15`	`+}`

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