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| // @Title: 丢失的数字 (Missing Number)
// @Author: 15816537946@163.com
// @Date: 2021-11-06 20:59:57
// @Runtime: 12 ms
// @Memory: 6.3 MB
func missingNumber(nums []int) int {
n := len(nums)
ret := make([]int,n+1)
for _,v := range nums {
ret[v] = -1
}
for i, v := range ret {
if v != -1 {
return i
}
}
return -1
}
|