Python program to insert an element into sorted list
Given a sorted list and an element, Write a Python program to insert the element into the given list in sorted position.
Examples:
Input : list = [1, 2, 4], n = 3 Output : list = [1, 2, 3, 4] Input : list = ['a', 'b', 'c', 'd'], n = 'e' Output : list = ['a', 'b', 'c', 'd', 'e']
Approach #1 :
This approach is the brute force method. Since the list is already sorted, we begin with a loop and check if the list element is greater than the given element. If yes, the given element need to be inserted at this position.
# Python3 program to insert # an element into sorted list # Function to insert elementdef insert(list, n): # Searching for the position for i in range(len(list)): if list[i] > n: index = i break # Inserting n in the list list = list[:i] + [n] + list[i:] return list # Driver functionlist = [1, 2, 4]n = 3 print(insert(list, n)) |
[1, 2, 3, 4]
Approach #2 :
Python comes with a bisect module whose purpose is to find a position in list where an element needs to be inserted to keep the list sorted. Thus we use this module to solve the given problem.
# Python3 program to insert # an element into sorted listimport bisect def insert(list, n): bisect.insort(list, n) return list # Driver functionlist = [1, 2, 4]n = 3 print(insert(list, n)) |
[1, 2, 3, 4]
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