# ADD - decimal to binary

src/interger_to_bytes.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"fmt"
+)
+
+func decimalToBinary(val uint64) []uint64 {
+	bits := []uint64{}
+
+	for val != 0 {
+		mod := val % 2
+		bits = append(bits, mod)
+
+		val = val / 2
+	}
+
+	for i := 0; i < len(bits); i++ {
+		fmt.Print(bits)
+	}
+
+	return bits
+}
+

src/interger_to_bytes_test.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"reflect"
+	"testing"
+)
+
+func Test_decimalToBinary(t *testing.T) {
+	type args struct {
+		val uint64
+	}
+	tests := []struct {
+		name string
+		args args
+		want []uint64
+	}{
+		{
+			"decimalToBinary#1",
+			args{3},
+			[]uint64{1,1},
+		},
+		{
+			"decimalToBinary#2",
+			args{15},
+			[]uint64{1,1,1,1},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := decimalToBinary(tt.args.val); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("decimalToBinary() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}