Update and rename hello.py to mergesort.py

merge sort using python

hello.py

@@ -1 +0,0 @@
-print("Hello, World!")

mergesort.py

@@ -0,0 +1,47 @@
+def mergeSort(array):
+    if len(array) > 1:
+
+        r = len(array)//2
+        L = array[:r]
+        M = array[r:]
+
+        mergeSort(L)
+        mergeSort(M)
+
+        i = j = k = 0
+
+
+        while i < len(L) and j < len(M):
+            if L[i] < M[j]:
+                array[k] = L[i]
+                i += 1
+            else:
+                array[k] = M[j]
+                j += 1
+            k += 1
+
+
+        while i < len(L):
+            array[k] = L[i]
+            i += 1
+            k += 1
+
+        while j < len(M):
+            array[k] = M[j]
+            j += 1
+            k += 1
+
+
+def printList(array):
+    for i in range(len(array)):
+        print(array[i], end=" ")
+    print()
+
+
+if __name__ == '__main__':
+    array = list(map(int,input("please input the elements: ").split()))
+
+    mergeSort(array)
+
+    print("Sorted array is: ")
+    printList(array)