按照题意解决
func sortArrayByParityII(A []int) []int {
if len(A) == 0 {
return []int{}
}
ret := make([]int, len(A))
a, b := 0, 1
for _, v := range A {
if v%2 == 0 {
ret[a] = v
a += 2
} else {
ret[b] = v
b += 2
}
}
return ret
}
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