Python | Convert list of string into sorted list of integer

Given a list of string, write a Python program to convert it into sorted list of integer.

Examples:

Input: ['21', '1', '131', '12', '15']
Output: [1, 12, 15, 21, 131]

Input: ['11', '1', '58', '15', '0']
Output: [0, 1, 11, 15, 58]

Let’s discuss different methods we can achieve this task.

Method #1: Using map and sorted()

# Python code to convert list of 
# string into sorted list of integer 
  
# List initialization 
list_string = ['21', '1', '131', '12', '15'] 
  
# mapping 
list_map = map(int, list_string) 
  
# sorting list 
list_sorted = sorted(list_map) 
  
# Printing sorted list of integers 
print(list_sorted) 

Output:

[1, 12, 15, 21, 131]

Method #2: Using list comprehension

# Python code to convert list of  
# string into sorted list of integer 
  
# List initialization 
list_string = ['11', '1', '58', '15', '0'] 
  
# Using list comprehension 
output = [int(x) for x in list_string] 
  
# using sort function 
output.sort() 
  
# Printing output 
print(output) 

Output:

[0, 1, 11, 15, 58]

Method #3: Using iteration

# Python code to convert list of 
# string into sorted list of integer 
  
# List initialization 
list_string = ['11', '1', '58', '15', '0'] 
  
# using iteration and sorted() 
list_sorted = sorted(int(x) for x in list_string) 
  
# printing output 
print(list_sorted) 

Output:

[0, 1, 11, 15, 58]

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