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Editorial Team
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Asked: 2026-06-07T16:26:38+00:00

In string 12345, out string 54321. Preferably without third party tools and regex.

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In string “12345”, out string “54321”. Preferably without third party tools and regex.

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1 Answer

  1. Editorial Team

    Simple:

    var="12345"
copy=${var}

len=${#copy}
for((i=$len-1;i>=0;i--)); do rev="$rev${copy:$i:1}"; done

echo "var: $var, rev: $rev"

    Output:

    $ bash rev
var: 12345, rev: 54321
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