Given a string, take the last char and return a new string with the last char added at the front and back, so "cat" yields "tcatt". The original string will be length 1 or more

backAround .jar

//Given a string, take the last char and return a new string with the last char added at the front and back, so "cat" yields "tcatt". The original string will be length 1 or more.

//backAround("cat") → "tcatt"
//backAround("Hello") → "oHelloo"
//backAround("a") → "aaa

public String backAround(String str) {
  int length = str.length();
  
  char length1 = str.charAt(length-1);
  
  return length1+str+length1;
}