Data commit

Task/Mutual-recursion/UNIX-Shell/mutual-recursion.sh

@@ -0,0 +1,32 @@
+M()
+{
+    local n
+    n=$1
+    if [[ $n -eq 0 ]]; then
+	echo -n 0
+    else
+	echo -n $(( n - $(F $(M $((n-1)) ) ) ))
+    fi
+}
+
+F()
+{
+    local n
+    n=$1
+    if [[ $n -eq 0 ]]; then
+	echo -n 1
+    else
+	echo -n $(( n - $(M $(F $((n-1)) ) ) ))
+    fi
+}
+
+for((i=0; i < 20; i++)); do
+    F $i
+    echo -n " "
+done
+echo
+for((i=0; i < 20; i++)); do
+    M $i
+    echo -n " "
+done
+echo