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28 changes: 28 additions & 0 deletions sorting/quick_sort.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
# This function takes last element as pivot, places
# the pivot element at its correct position in sorted
# array, and places all smaller (smaller than pivot)
# to left of pivot and all greater elements to right
# of pivot
def partition(arr,low,high):
i = ( low-1 )
pivot = arr[high]

for j in range(low , high):
if arr[j] <= pivot:
i = i+1
arr[i],arr[j] = arr[j],arr[i]

arr[i+1],arr[high] = arr[high],arr[i+1]
return ( i+1 )


def quickSort(arr,low,high):
if low < high:

pi = partition(arr,low,high)

quickSort(arr, low, pi-1)
quickSort(arr, pi+1, high)