52: permuted multiples

52_permuted_multiples/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	i := 10
+	for {
+		if isSameDigits([6]int{i, 2 * i, 3 * i, 4 * i, 5 * i, 6 * i}) {
+			break
+		}
+		i++
+	}
+	fmt.Println("i=", i)
+}
+
+func isSameDigits(value [6]int) bool {
+	last := 0
+	for i, n := range value {
+		x := sortInt(n)
+		if i == 0 {
+			last = x
+		} else if x != last {
+			return false
+		}
+	}
+	return true
+}
+
+func sortInt(input int) int {
+	swapped, _ := strconv.Atoi(bubbleSort(strconv.Itoa(input)))
+	return swapped
+
+}
+
+func bubbleSort(word string) string {
+	wordtable := strings.Split(word, "")
+	for j := 0; j < len(word); j++ {
+
+		for i := 0; i < len(word)-1; i++ {
+			if wordtable[i] < wordtable[i+1] {
+				temp := wordtable[i]
+				wordtable[i] = wordtable[i+1]
+				wordtable[i+1] = temp
+			}
+		}
+	}
+	return strings.Join(wordtable, "")
+}

52_permuted_multiples/main_test.go

@@ -0,0 +1,32 @@
+package main
+
+import "testing"
+
+func Test_isSameDigits(t *testing.T) {
+	type args struct {
+		value [6]int
+	}
+	tests := []struct {
+		name string
+		args args
+		want bool
+	}{
+		{
+			"test1",
+			args{[6]int{2, 4, 6, 8, 10, 12}},
+			false,
+		},
+		{
+			"test2",
+			args{[6]int{142857, 285714, 428571, 571428, 714285, 857142}},
+			true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := isSameDigits(tt.args.value); got != tt.want {
+				t.Errorf("isSameDigits() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}