smallest multiple

smallest_multiple/main.go

@@ -0,0 +1,23 @@
+package main
+
+import "fmt"
+
+func main() {
+	n := 20
+	for {
+		if IsDivisibleFor1to20(n) {
+			fmt.Println("evenly divisible by all of the numbers from 1 to 20:", n)
+			return
+		}
+		n++
+	}
+}
+
+func IsDivisibleFor1to20(n int) bool {
+	for i := 1; i <= 20; i++ {
+		if n%i != 0 {
+			return false
+		}
+	}
+	return true
+}

smallest_multiple/smallest_multiple_test.go

@@ -0,0 +1,31 @@
+package main
+
+import "testing"
+
+func TestIsDivisibleFor1to20(t *testing.T) {
+	tt := []struct {
+		name  string
+		input int
+		want  bool
+	}{
+		{
+			"20",
+			20,
+			false,
+		},
+		{
+			"14",
+			14,
+			false,
+		},
+	}
+
+	for _, tc := range tt {
+		t.Run(tc.name, func(t *testing.T) {
+			got := IsDivisibleFor1to20(tc.input)
+			if got != tc.want {
+				t.Errorf("IsDivisibleFor1to20(%d)=%v, want %v", tc.input, got, tc.want)
+			}
+		})
+	}
+}