要求:给定字符串数组,找出各个字符串中出现的公共字符。
例子:给定字符串数组中有三个字符串"1233333", “2543”, “765432”,
输出字符’2’, ‘3’,输出字符的顺序不做要求。
import java.util.*;
public class CommonDigitFinder {
public static void main(String[] args) {
String[] strings = new String[]{"1233333", "2543", "765432"};
List<String> list = commonChars(strings);
System.out.println(list);
}
public static List<String> commonChars(String[] A) {
List<String> list = new ArrayList<>();
int maxIndex = 0;
for (int i = 0; i < A.length; i++) {
if (A[i].length() > A[maxIndex].length()) {
maxIndex = i;
}
}
for (int i = 0; i < A[maxIndex].length(); i++) {
boolean allHave = true;
for (int j = 0; j < A.length; j+