1100.go

package main

import (
	"fmt"
)

func main() {
	lengther := 0
	couter := 0
	data := [] string{}
	//resData := [3][10] int{}
	fmt.Print("Input length: ")
	fmt.Scanf("%d", &lengther)
	i := 0
	for i < lengther {
		var temp string
		fmt.Printf("Input student code %d : ", i+1)
		fmt.Scanf("%s", &temp)
		if (len(temp) != 3) {
			fmt.Println("Please input only three digit")
		} else {
			data = append(data, temp)
			i += 1
		}
	}
	//for j := 0; j < len(data); j++ {
	//	temp := data[j] % 10
	//	temp2 := (data[j] % 100) / 10
	//	temp3 := (data[j] % 1000) / 100
	//	//fmt.Println(temp)
	//	resData[0][temp] = resData[0][temp] + 1
	//	resData[1][temp2] = resData[1][temp2] + 1
	//	resData[2][temp3] = resData[2][temp3] + 1
	//}

	//for k := 0; k < 3; k++ {
	//	for l := 0; l < 10; l++ {
	//		//if (resData[k][l] > 1) {
	//			couter += (resData[k][l] / 2)
	//		//}
	//	}
	//}
	for j := 0; j < len(data); j++ {
		for k := j; k < len(data); k++ {
			if (k + 1) != len(data) {
				if data[j][0] == data[k+1][0] || data[j][1] == data[k+1][1] || data[j][2] == data[k+1][2] {
					couter += 1
				}
			}
		}
	}
	fmt.Println(couter)
}