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solve house robber
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house-robber/delight010.swift

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class Solution {
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func rob(_ nums: [Int]) -> Int {
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var sum1 = 0
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var sum2 = 0
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for num in nums {
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// for문을 통해 루프.
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// 시간복잡도는 O(n)
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let temp = max(num + sum1, sum2)
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sum1 = sum2
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sum2 = temp
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}
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return sum2
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}
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}
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