题解 | #坐标移动#

import java.util.Arrays; import java.util.Map; import java.util.Scanner; import java.util.stream.Collectors;

public class Main {

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    while (scanner.hasNextLine()) {
        String line = scanner.nextLine();
        String[] charArray = line.split("");
        Map<String, Long> charCountMap = Arrays.stream(charArray).collect(Collectors.groupingBy(x -> x, Collectors.counting()));
        Long minCount = charCountMap.values().stream().min(Long::compareTo).orElse(0L);
        String result = Arrays.stream(charArray).filter(c -> !minCount.equals(charCountMap.get(c))).collect(Collectors.joining(""));
        System.out.println(result);
    }
} 

}