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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:38:56 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:38:56 +0000
commit6c20c8ed2cb9ab69a1a57ccb2b9b79969a808321 (patch)
treef63ce19d57fad3ac4a15bc26dbfbfa2b834111b5 /examples/functions/fact
parentInitial commit. (diff)
downloadbash-upstream.tar.xz
bash-upstream.zip
Adding upstream version 5.2.15.upstream/5.2.15upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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1 files changed, 13 insertions, 0 deletions
diff --git a/examples/functions/fact b/examples/functions/fact
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+# Who said shells can't use recursion? Here is a factorial function.
+# You call it with a number as an argument, and it returns the factorial
+# of that number.
+
+fact ()
+{
+ local num=$1;
+ if [ "$num" = 1 ] ; then
+ echo 1
+ return ;
+ fi;
+ echo $(( $num * $(fact $(( $num - 1 )) ) ))
+}