Array

Functions for array operations and manipulations.

Table of Contents

array::contains()

Check if item exists in the given array.

Arguments

  • $1 (mixed): Item to search (needle).
  • $2 (array): array to be searched (haystack).

Exit codes

  • 0: If successful.
  • 1: If no match found in the array.
  • 2: Function missing arguments.

Example

array=("a" "b" "c")
array::contains "c" ${array[@]}
#Output
0

array::dedupe()

Remove duplicate items from the array.

Arguments

  • $1 (array): Array to be deduped.

Exit codes

  • 0: If successful.
  • 2: Function missing arguments.

Output on stdout

  • Deduplicated array.

Example

array=("a" "b" "a" "c")
printf "%s" "$(array::dedupe ${array[@]})"
#Output
a
b
c

array::is_empty()

Check if a given array is empty.

Arguments

  • $1 (array): Array to be checked.

Exit codes

  • 0: If the given array is empty.
  • 2: If the given array is not empty.

Example

array=("a" "b" "c" "d")
array::is_empty "${array[@]}"

array::join()

Join array elements with a string.

Arguments

  • $1 (string): String to join the array elements (glue).
  • $2 (array): array to be joined with glue string.

Exit codes

  • 0: If successful.
  • 2: Function missing arguments.

Output on stdout

  • String containing a string representation of all the array elements in the same order,with the glue string between each element.

Example

array=("a" "b" "c" "d")
printf "%s" "$(array::join "," "${array[@]}")"
#Output
a,b,c,d
printf "%s" "$(array::join "" "${array[@]}")"
#Output
abcd

array::reverse()

Return an array with elements in reverse order.

Arguments

  • $1 (array): The input array.

Exit codes

  • 0: If successful.
  • 2: Function missing arguments.

Output on stdout

  • The reversed array.

Example

array=(1 2 3 4 5)
printf "%s" "$(array::reverse "${array[@]}")"
#Output
5 4 3 2 1

array::random_element()

Returns a random item from the array.

Arguments

  • $1 (array): The input array.

Exit codes

  • 0: If successful.
  • 2: Function missing arguments.

Output on stdout

  • Random item out of the array.

Example

array=("a" "b" "c" "d")
printf "%s\n" "$(array::random_element "${array[@]}")"
#Output
c

array::sort()

Sort an array from lowest to highest.

Arguments

  • $1 (array): The input array.

Exit codes

  • 0: If successful.
  • 2: Function missing arguments.

Output on stdout

  • sorted array.

Example

sarr=("a c" "a" "d" 2 1 "4 5")
array::array_sort "${sarr[@]}"
#Output
1
2
4 5
a
a c
d

array::rsort()

Sort an array in reverse order (highest to lowest).

Arguments

  • $1 (array): The input array.

Exit codes

  • 0: If successful.
  • 2: Function missing arguments.

Output on stdout

  • reverse sorted array.

Example

sarr=("a c" "a" "d" 2 1 "4 5")
array::array_sort "${sarr[@]}"
#Output
d
a c
a
4 5
2
1

array::bsort()

Bubble sort an integer array from lowest to highest. This sort does not work on string array.

Arguments

  • $1 (array): The input array.

Exit codes

  • 0: If successful.
  • 2: Function missing arguments.

Output on stdout

  • bubble sorted array.

Example

iarr=(4 5 1 3)
array::bsort "${iarr[@]}"
#Output
1
3
4
5

array::merge()

Merge two arrays. Pass the variable name of the array instead of value of the variable.

Arguments

  • $1 (string): variable name of first array.
  • $2 (string): variable name of second array.

Exit codes

  • 0: If successful.
  • 2: Function missing arguments.

Output on stdout

  • Merged array.

Example

a=("a" "c")
b=("d" "c")
array::merge "a[@]" "b[@]"
#Output
a
c
d
c