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Top Forums Shell Programming and Scripting How to get next string of a matching string? Post 302922299 by Don Cragun on Thursday 23rd of October 2014 03:39:03 PM
Old 10-23-2014
With a recent ksh or bash, you could also try using arrays in the shell:
Code:
#!/bin/ksh
fruits=(apple "honeydew melon" grape orange jack lemon)
for i in "$@"
do	for (( f=0; f < ${#fruits[@]}; f++))
	do	if [ "${fruits[f]}" = "$i" ]
		then	printf 'Fruit after %s is %s\n' "$i" \
				"${fruits[(f + 1) % ${#fruits[@]}]}"
			break
		fi
	done
	if [ $f -ge ${#fruits[@]} ]
	then	printf 'Fruit %s not found\n' "$i"
	fi
done

which when invoked with the operands:
Code:
apple jack lemon pear

produces the output:
Code:
Fruit after apple is honeydew melon
Fruit after jack is lemon
Fruit after lemon is apple
Fruit pear not found

 

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RSORT(3)								 1								  RSORT(3)

rsort - Sort an array in reverse order

SYNOPSIS
bool rsort (array &$array, [int $sort_flags = SORT_REGULAR]) DESCRIPTION
This function sorts an array in reverse order (highest to lowest). PARAMETERS
o $array - The input array. o $sort_flags - You may modify the behavior of the sort using the optional parameter $sort_flags, for details see sort(3). RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 rsort(3) example <?php $fruits = array("lemon", "orange", "banana", "apple"); rsort($fruits); foreach ($fruits as $key => $val) { echo "$key = $val "; } ?> The above example will output: 0 = orange 1 = lemon 2 = banana 3 = apple The fruits have been sorted in reverse alphabetical order. NOTES
Note This function assigns new keys to the elements in $array. It will remove any existing keys that may have been assigned, rather than just reordering the keys. SEE ALSO
arsort(3), krsort(3), The comparison of array sorting functions. PHP Documentation Group RSORT(3)
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