题解 | #简单密码#

public static void main(String[] args) { Scanner sc = new Scanner(System.in); String nextLine = sc.nextLine(); char[] toCharArray = nextLine.toCharArray(); String s = "1--1,abc--2,def--3,ghi--4,jkl--5,mno--6,pqrs--7,tuv--8,wxyz--9,0--0"; String[] strings = s.split(","); ArrayList<HashMap<String,Object>> list = new ArrayList<>(); for (String temp:strings) { String[] split = temp.split("--"); HashMap<String,Object> hashMap = new HashMap<String,Object>(); hashMap.put(split[0],split[1]); list.add(hashMap);
    } StringBuffer br = new StringBuffer(); for (char c :toCharArray) { if(c >= 'A' && c<= 'Z'){ if(c== 'Z'){
                c = 'a';
            }else{
                c = (++c+"").toLowerCase().charAt(0);
            } br.append(c); //continue;  }else if(c >= 'a' && c<= 'z'){ String temp = ""; for (int i = 0; i < list.size(); i++) { HashMap<String, Object> hashMapTemp = list.get(i); if(hashMapTemp.toString().contains(c+"")){ for (Map.Entry<String, Object> ent:hashMapTemp.entrySet()) {
                        temp = ent.getValue()+"";
                    }
                 }
            } br.append(temp);
        }else{ br.append(c);
        }
    } System.out.println(br);
}