15 lines
234 B
Go
15 lines
234 B
Go
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package main
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// Time: O(n)
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// Space: O(n)
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func containsDuplicate(nums []int) bool {
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exists := make(map[int]bool)
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for _, num := range nums {
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if _, ok := exists[num]; ok {
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return true
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}
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exists[num] = true
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}
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return false
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}
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