Common list elements: Difference between revisions
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=={{header|Ksh}}==
<lang ksh>
#!/bin/ksh
# Find the common list elements in an integer array nums[][]
# # Variables:
#
typeset -a nums=( (2 5 1 3 8 9 4 6) (3 5 6 2 9 8 4) (1 3 7 6 9) )
# # Functions:
#
# # Function _flatten(arr[][] arr[]) - flatten input matrix
#
function _flatten {
typeset _inarr ; nameref _inarr="$1"
typeset _outarr ; nameref _outarr="$2"
typeset _i ; integer _i
_oldIFS=$IFS ; IFS=\|
for ((_i=1; _i<${#_inarr[*]}; _i++)); do
_outarr[_i]=${_inarr[_i][*]}
done
IFS=$oldIFS
}
######
# main #
######
typeset -a flatarr output
_flatten nums flatarr
integer i j
for ((i=0; i<${#nums[0][*]}; i++)); do
integer cnt=0
for ((j=1; j<=${#flatarr[*]}; j++)); do
[[ ${nums[0][i]} == @(${flatarr[j]%\|}) ]] && (( cnt++ ))
done
(( cnt == 2 )) && output+=( ${nums[0][i]} )
done
print "( ${output[@]} )"</lang>
{{out}}
<pre>( 3 9 6 )</pre>
=={{header|Julia}}==
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