Python Program for Binary Insertion Sort

In this article, we will learn about the solution to the problem statement given below.

Problem statement − We are given an array, we need to sort it using the concept of binary insertion sort.

Here as the name suggests, we use the concept of the binary search along with the insertion sort algorithm.

Now let’s observe the solution in the implementation below −


 Live Demo

# sort
def insertion_sort(arr):
   for i in range(1, len(arr)):
      temp = arr[i]
      pos = binary_search(arr, temp, 0, i) + 1
      for k in range(i, pos, -1):
         arr[k] = arr[k - 1]
      arr[pos] = temp
def binary_search(arr, key, start, end):
   if end - start <= 1:
      if key < arr[start]:
         return start - 1
         return start
   mid = (start + end)//2
   if arr[mid] < key:
      return binary_search(arr, key, mid, end)
   elif arr[mid] > key:
      return binary_search(arr, key, start, mid)
      return mid
# main
arr = [1,5,3,4,8,6,3,4]
n = len(arr)
print("Sorted array is:")
for i in range(n):
   print(arr[i],end=" ")


Sorted array is :
1 3 3 4 4 5 5 6 8

All the variables are declared in the local scope and their references are seen in the figure above.


In this article, we have learned about how we can make a Python Program for Binary Insertion Sort

Updated on: 20-Dec-2019

1K+ Views

Kickstart Your Career

Get certified by completing the course

Get Started