Data commit

Task/Symmetric-difference/UNIX-Shell/symmetric-difference.sh

@@ -0,0 +1,43 @@
+uniq() {
+  u=("$@")
+  for ((i=0;i<${#u[@]};i++)); do
+    for ((j=i+1;j<=${#u[@]};j++)); do
+      [ "${u[$i]}" = "${u[$j]}" ] && unset u[$i]
+    done
+  done
+  u=("${u[@]}")
+}
+
+a=(John Serena Bob Mary Serena)
+b=(Jim Mary John Jim Bob)
+
+uniq "${a[@]}"
+au=("${u[@]}")
+uniq "${b[@]}"
+bu=("${u[@]}")
+
+ab=("${au[@]}")
+for ((i=0;i<=${#au[@]};i++)); do
+  for ((j=0;j<=${#bu[@]};j++)); do
+    [ "${ab[$i]}" = "${bu[$j]}" ] && unset ab[$i]
+  done
+done
+ab=("${ab[@]}")
+
+ba=("${bu[@]}")
+for ((i=0;i<=${#bu[@]};i++)); do
+  for ((j=0;j<=${#au[@]};j++)); do
+    [ "${ba[$i]}" = "${au[$j]}" ] && unset ba[$i]
+  done
+done
+ba=("${ba[@]}")
+
+sd=("${ab[@]}" "${ba[@]}")
+
+echo "Set A = ${a[@]}"
+echo "      = ${au[@]}"
+echo "Set B = ${b[@]}"
+echo "      = ${bu[@]}"
+echo "A - B = ${ab[@]}"
+echo "B - A = ${ba[@]}"
+echo "Symmetric difference = ${sd[@]}"