题解 | #字符串加密#
字符串加密
https://www.nowcoder.com/practice/e4af1fe682b54459b2a211df91a91cf3
import java.util.*; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); // 注意 hasNext 和 hasNextLine 的区别 while (in.hasNextLine()) { // 注意 while 处理多个 case String key = in.nextLine(); Set<Character> charSet = new LinkedHashSet <>(); //LinkedHashSet特性进行去重 for (char c : key.toCharArray()) { charSet.add(c); } //追加剩余字母 for (int i = 0; i < 26; i++) { char c = (char)('a' + i); if (charSet.contains(c)) { continue; } else { charSet.add(c); } } Character[] keyArr=charSet.toArray(new Character[0]); //输入明文 String plain = in.nextLine(); char[] res=new char[plain.length()]; //进行对应 for(int i=0;i<plain.length();i++){ char c=plain.charAt(i); if(c==' '){ res[i]=' '; }else{ res[i]=keyArr[c-'a']; } } System.out.println(new String(res)); } } }