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package main
import (
"fmt"
)
func frequency(arr []int) map[int]int {
f := make(map[int]int)
for _, n := range arr {
f[n] = f[n] + 1
}
return f
}
func gcd(a, b int) int {
for b > 0 {
c := a % b
a = b
b = c
}
return a
}
func equalGroup(arr []int) bool {
h := frequency(arr)
values := make([]int, 0, len(h))
for _, v := range h {
values = append(values, v)
}
if len(values) == 0 {
return false
}
res := values[0]
for i := 1; i < len(values); i++ {
res = gcd(res, values[i])
}
return res > 1
}
func main() {
fmt.Println(equalGroup([]int{1, 1, 2, 2, 2, 2}))
fmt.Println(equalGroup([]int{1, 1, 1, 2, 2, 2, 3, 3}))
fmt.Println(equalGroup([]int{5, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7}))
fmt.Println(equalGroup([]int{1, 2, 3, 4}))
fmt.Println(equalGroup([]int{8, 8, 9, 9, 10, 10, 11, 11}))
}
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