Add solution 0304

leetcode/0304.Range-Sum-Query-2D-Immutable/304. Range Sum Query 2D - Immutable_test.go

@@ -0,0 +1,21 @@
+package leetcode
+
+import (
+	"fmt"
+	"testing"
+)
+
+func Test_Problem304(t *testing.T) {
+	obj := Constructor(
+		[][]int{
+			{3, 0, 1, 4, 2},
+			{5, 6, 3, 2, 1},
+			{1, 2, 0, 1, 5},
+			{4, 1, 0, 1, 7},
+			{1, 0, 3, 0, 5},
+		},
+	)
+	fmt.Printf("obj = %v\n", obj.SumRegion(2, 1, 4, 3))
+	fmt.Printf("obj = %v\n", obj.SumRegion(1, 1, 2, 2))
+	fmt.Printf("obj = %v\n", obj.SumRegion(1, 2, 2, 4))
+}