(bash) adding suffix to each element of an array

bash-test.sh

@@ -1,15 +1,11 @@
 #!/usr/bin/env bash
 
-vector=({1..20})
+array=("test0" "test1" "test2")
+suffix="henlo"
 
-echo "before : ${vector[@]}"
+echo "${array[@]}"
+echo ""
 
-for n in ${!vector[@]}; do
+array=("${array[@]/%/${suffix}}")
-    echo $n
-    if (($n % 2 == 0)); then
-        unset vector[$n]
-    fi
-done
 
-echo "after : ${vector[@]}"
+echo "${array[@]}"
-echo "after_index : ${!vector[@]}"