Python Program for Recursive Insertion Sort
Insertion sort is a simple sorting algorithm that works the way we sort playing cards in our hands.
Below is an iterative algorithm for insertion sort
Algorithm
// Sort an arr[] of size n insertionSort(arr, n) Loop from i = 1 to n-1. a) Pick element arr[i] and insert it into sorted sequence arr[0..i-1]
Python
# Recursive Python program for insertion sort # Recursive function to sort an array using insertion sort def insertionSortRecursive(arr,n): # base case if n< = 1 : return # Sort first n-1 elements insertionSortRecursive(arr,n - 1 ) \ '\'\' Insert last element at its correct position in sorted array.\ '\'\' last = arr[n - 1 ] j = n - 2 # Move elements of arr[0..i-1], that are # greater than key, to one position ahead # of their current position while (j> = 0 and arr[j]>last): arr[j + 1 ] = arr[j] j = j - 1 arr[j + 1 ] = last # A utility function to print an array of size n def printArray(arr,n): for i in range (n): print arr[i], # Driver program to test insertion sort arr = [ 12 , 11 , 13 , 5 , 6 ] n = len (arr) insertionSortRecursive(arr, n) printArray(arr, n) # Contributed by Harsh Valecha |
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Please refer complete article on Recursive Insertion Sort for more details!
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