带有字符的掩码字符串 [英] Mask String with characters
本文介绍了带有字符的掩码字符串的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
嘿,我试图找到一种隐藏字符串的方法,但是我发现的代码仅适用于我的应用程序...有没有一种方法可以使用 *
或-
,如果有人可以解释
Hey guy's I tried to find a way to hide a string, but the code that I found just work with my application... Is there a way to hide the characters in a string with either *
or -
and if there is can someone please explain
推荐答案
这是用于输入密码的吗?请考虑以下内容:
Is this for making a password? Consider the following:
class Password {
final String password; // the string to mask
Password(String password) { this.password = password; } // needs null protection
// allow this to be equal to any string
// reconsider this approach if adding it to a map or something?
public boolean equals(Object o) {
return password.equals(o);
}
// we don't need anything special that the string doesnt
public int hashCode() { return password.hashCode(); }
// send stars if anyone asks to see the string - consider sending just
// "******" instead of the length, that way you don't reveal the password's length
// which might be protected information
public String toString() {
StringBuilder sb = new StringBuilder();
for(int i = 0; < password.length(); i++)
sb.append("*");
return sb.toString();
}
}
或者使用the子手的方法
Or for the hangman approach
class Hangman {
final String word;
final BitSet revealed;
public Hangman(String word) {
this.word = word;
this.revealed = new BitSet(word.length());
reveal(' ');
reveal('-');
}
public void reveal(char c) {
for(int i = 0; i < word.length; i++) {
if(word.charAt(i) == c) revealed.set(i);
}
}
public boolean solve(String guess) {
return word.equals(guess);
}
public String toString() {
StringBuilder sb = new StringBuilder(word.length());
for(int i = 0; i < word.length; i++) {
char c = revealed.isSet(i) ? word.charAt(i) : "*";
}
return sb.toString();
}
}
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