fix CPPLINT in sorting folder

(cherry picked from commit 7efa52e067)

sorting/insertion_sort.cpp

@@ -0,0 +1,40 @@
+//Insertion Sort
+
+#include <iostream>
+using namespace std;
+
+int main()
+{
+	int n;
+	cout << "\nEnter the length of your array : ";
+	cin >> n;
+	int Array[n];
+	cout << "\nEnter any " << n << " Numbers for Unsorted Array : ";
+
+	//Input
+	for (int i = 0; i < n; i++)
+	{
+		cin >> Array[i];
+	}
+
+	//Sorting
+	for (int i = 1; i < n; i++)
+	{
+		int temp = Array[i];
+		int j = i - 1;
+		while (j >= 0 && temp < Array[j])
+		{
+			Array[j + 1] = Array[j];
+			j--;
+		}
+		Array[j + 1] = temp;
+	}
+
+	//Output
+	cout << "\nSorted Array : ";
+	for (int i = 0; i < n; i++)
+	{
+		cout << Array[i] << "\t";
+	}
+	return 0;
+}