Added QuickSort Algorithm

data_structures/sortings/QuickSort.java

@@ -0,0 +1,52 @@
+// Java program for implementation of QuickSort
+// Referenced from: Geeks for geeks
+
+class QuickSort 
+{ 
+	int partition(int arr[], int low, int high) 
+	{ 
+		int pivot = arr[high]; 
+		int i = (low-1); 
+		for (int j=low; j<high; j++) 
+		{ 
+			if (arr[j] < pivot) 
+			{ 
+				i++; 
+
+				// swapping
+				int temp = arr[i]; 
+				arr[i] = arr[j]; 
+				arr[j] = temp; 
+			} 
+		} 
+
+		int temp = arr[i+1]; 
+		arr[i+1] = arr[high]; 
+		arr[high] = temp; 
+
+		return i+1; 
+	} 
+
+	void sort(int arr[], int low, int high) 
+	{ 
+		if (low < high) 
+		{ 
+			int pi = partition(arr, low, high); 
+			sort(arr, low, pi-1); 
+			sort(arr, pi+1, high); 
+		} 
+	} 
+
+	public static void main(String args[]) 
+	{ 
+		int arr[] = {10, 7, 8, 9, 1, 5}; 
+		int n = arr.length; 
+
+		QuickSort ob = new QuickSort(); 
+		ob.sort(arr, 0, n-1); 
+		system.out.println("Sorted Arr: ");
+		for (int i=0; i<n; ++i) 
+			System.out.print(arr[i]+" "); 
+		System.out.println(); 
+	} 
+}