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题目：

题解：

func checkSubarraySum(nums []int, k int) bool {m := len(nums)if m < 2 {return false}mp := map[int]int{0: -1}remainder := 0for i, num := range nums {remainder = (remainder + num) % kif prevIndex, has := mp[remainder]; has {if i-prevIndex >= 2 {return true}} else {mp[remainder] = i}}return false
}