Sorting mixed Strings in Perl

Perl | sort() Function

Last Updated : 17 Mar, 2023

sort() function in Perl is used to sort a list with or without the use of method of sorting. This method can be specified by the user in the form of subroutines or blocks. If a subroutine or block is not specified then it will follow the default method of sorting.

Syntax: sort List sort block, List sort Subroutine, List Returns: sorted list as per user’s requirement

Example 1:

Perl

#!/usr/bin/perl
 
@array1 = ("a", "d", "h", "e", "b");
 
print "Original Array: @array1\n";
print ("Sorted Array: ", sort(@array1));

Output:

Original Array: a d h e b
Sorted Array: abdeh

Example 2: Use of Block to sort

Perl

#!/usr/bin/perl -w
use warnings;
use strict;
 
# Use of Block to sort 
my @numeric = sort { $a <=> $b } (2, 11, 54, 6, 35, 87);
 
print "@numeric\n";

Output:

2 6 11 35 54 87

In the above code, block is used to sort because sort() function uses characters to sort the strings, but in numerical context, it is not possible to follow the same. Hence, block is used to ease the sort.

Example 3: Use of Subroutine to sort

Perl

#!/usr/bin/perl -w
use warnings;
use strict;
 
# Calling subroutine to sort numerical array
my @numerical = sort compare_sort (2, 11, 54, 6, 35, 87);
print "@numerical\n";
  
# function to compare two numbers
sub compare_sort
{
   if($a < $b)
   {
      return -1;
   }
   elsif($a == $b)
   {
      return 0;
   }
   else
   {
      return 1;                       
   }
}

Output:

2 6 11 35 54 87

Example – 4 : Mixed case

Here we will see how the sort function works if we have an array of strings with mixed case (upper or lower) for the first character of each string.

Perl

#!/usr/bin/perl
 
@st_arr = ("geeks","For","Geeks","Is","best","for","Coding");
@lst = sort(@st_arr);
 
print("@lst");

Output

Coding For Geeks Is best for geeks

Here we can see that the sort function first sorted the strings which has upper case letters at the beginning in ascending order (A-Z) and then it sorted the rest which has lower case letters at the beginning in ascending order (a-z). This happened due to the fact that the ASCII values of upper case letters is less than that of lowercase letters.

Sorting mixed Strings in Perl

C

Code_Mech

Improve

Article Tags :

Similar Reads

Sorting Hash in Perl

Prerequisite: Perl | Hashes Set of key/value pair is called a Hash. Each key in a hash structure are unique and of type strings. The values associated with these keys are scalar. These values can either be a number, string or a reference. A Hash is declared using my keyword. Let us consider an examp

Perl Reverse Sort Method

The article focuses on discussing how to sort an array/ list which consists of integers or strings in reverse order (descending to ascending). Prerequisite: Sorting in Perl. Syntax: reverse sort @array_name; reverse sort (@array_name); This method is a combination of the reverse and sort method of P

Perl | Sorting of Arrays

Perl has a built-in sort() function to sort an array of alphabets and numbers. When an array is passed to the sort() function it returns a sorted array. Syntax: sort @Array Returns: a sorted array Sorting of Arrays in Perl can be done in multiple ways: Use of ASCII values to sort an Array Use of Com

Sorting mixed Strings in Perl

Sorting in Perl can be done with the use of a pre-defined function 'sort'. This function uses a quicksort algorithm to sort the array passed to it. Syntax: sort @array Returns: a sorted array Sorting of an array that contains strings in the mixed form i.e. alphanumeric strings can be done in various

Sorting of Arrays in Julia

The process of arranging the given data in a particular order or manner depends on the output. It is storing of data in sorted order. Sorting can be done in two ways i.e in ascending and descending order. Sorting can be performed using sorting algorithm or sorting functions. So, in sorting the progr

Sorting of Strings in Julia

Sorting of strings in Julia means that now we are sorting the characters of the string. In Julia, this can easily be achieved with the basic logic of getting each character of the string into a separate array and sorting the array. Lastly joining the array together to get the sorted array. Major tas

Sorting contents of a Data Frame in Julia

Sorting is a technique of storing data in sorted order. Sorting can be performed using sorting algorithms or sorting functions. to sort in a particular dataframe then extracting its values and applying the sorting function would easily sort the contents of a particular dataframe. Julia provides vari

How to Sort Golang Map By Keys or Values?

Let's say we have a map and want to find a specific key-value pair but it can be located in any order, so to have the map in Golang in a particular order, we can sort the map by its keys or values. In this article, we will see how to sort a map in go lang by its keys or values.Â Sort By KeysTo sort

PHP rsort() Function

The rsort() is an inbuilt function in PHP and is used to sort the array in descending order i.e, greatest to smallest. It sorts the actual array and hence changes are reflected in the array itself. The function provides us with 6 sorting types, according to which the array can be sorted. Syntax: rso

Excel SORT Function

Explore the power of your Excel data with our easy-to-follow guide on Excel Sort Function. Whether youâ€™re a beginner or an experienced professional, learning Excelâ€™s sorting and filtering tools can enhance your workflow and provide valuable insights. This article explores each step, ensuring you can