20210105

20210105/main.go

@@ -0,0 +1,21 @@
+package main
+
+func main() {
+
+}
+
+func countBalance(s string) int {
+	count, rCount, lCount := 0, 0, 0
+	for i := 0; i < len(s); i++ {
+		if s[i] == 'R' {
+			rCount++
+		} else if s[i] == 'L' {
+			lCount++
+		}
+		if rCount > 0 && rCount == lCount {
+			lCount, rCount = 0, 0
+			count++
+		}
+	}
+	return count
+}

20210105/main_test.go

@@ -0,0 +1,29 @@
+package main
+
+import "testing"
+
+func Test_countBalance(t *testing.T) {
+	type args struct {
+		s string
+	}
+	tests := []struct {
+		name string
+		args args
+		want int
+	}{
+		{
+			"test1",
+			args{
+				"RLRRLLRLRL",
+			},
+			4,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := countBalance(tt.args.s); got != tt.want {
+				t.Errorf("countBalance() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}