Fixed quick sort

quicksortEarlyAccess.py

@@ -1,6 +1,6 @@
 no = int(input("Enter number of students: "))
 list2 = []
-#list1 = []
+
 for i in range(0,no):
 	n = float(input("Enter % of student: "))
 	list2.append(n)
@@ -8,31 +8,32 @@ print(list2)
 
 d = len(list2)
 
-def partition(list3,a,b):
+def partition(list3, low, high):
-	v = list3[a]
+    i = low - 1
-	i = a
+    pivot = list3[high]
-	j = b-1
+
-	temp = 0
+    for j in range(low, high):
-	while(i<j):
+        if list3[j] < pivot:
-		while(list3[i]<=v and i<=j):
+            i += 1
-			i = i + 1
+            list3[i], list3[j] = list3[j], list3[i]
-		while(list3[j] > v):
+
-			j = j - 1
+    list3[i + 1], list3[high] = list3[high], list3[i + 1]
-		if(i<j):
+    return i + 1
-			temp = list3[i]
+
-			list3[i] = list3[j]
+def quicksort(list1, low, high):
-			list3[j] = temp
+    if low < high:
-	list3[a] = list3[j]
+        pi = partition(list1, low, high)
-	list3[j] = v
+        quicksort(list1, low, pi - 1)
-	return j
+        quicksort(list1, pi + 1, high)
+
+no = int(input("Enter number of students: "))
+list2 = []
+
+for i in range(0, no):
+    n = float(input("Enter % of student: "))
+    list2.append(n)
+print("Unsorted list: ", list2)
+
+quicksort(list2, 0, len(list2) - 1)
+print("Sorted list: ", list2)
 
-def quicksort(list1, l, u):
-	j = 0
-	if(l<u):
-		j = partition(list1,l,u)
-		quicksort(list1,l,j - 1)
-		quicksort(list1,j+1,u)
-	list2 = list1
-	return list2
-o = quicksort(list2,0,d)
-print("Sorted list is: ",o)