题解 | #删除字符串中出现次数最少的字符#
删除字符串中出现次数最少的字符
https://www.nowcoder.com/practice/05182d328eb848dda7fdd5e029a56da9
import java.util.Scanner;
// 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);
String s = in.next();
String[] s2 = new String[s.length()];
String[] s1 = new String[s.length()];
int max = 0;
for (int i = 0 ; i < s.length(); i++) {
s1[i] = s.substring(i, i + 1);
}
String res = null;
int b = 0;
for (int i = 0; i < s1.length; i++) {
s2[i] = s.replace(s1[i], "");
if (s2[i].length() > max) {
max = s2[i].length();
res = s2[i];
b = i;
} else if (s2[i].length() == max) {
res = res.replace(s1[b], "");
res = res.replace(s1[i], "");
b = i;
}
}
System.out.println(res);
}
}
查看7道真题和解析