| Код |
public class Utils {
public static boolean isSymmetric(String[] strings, int idx) {
if (idx < 0 || idx > strings.length) {
throw new IndexOutOfBoundsException();
}
return isSymmetric(strings[idx]);
}
public static boolean isSymmetric(String s) {
if (s == null || s.isEmpty()) {
return true;
}
for (int i = 0, j = s.length() - 1; i < j; i++, j--) {
char c1 = s.charAt(i);
char c2 = s.charAt(j);
if (c1 != c2) {
return false;
}
}
return true;
}
public static void main(String[] args) {
String[] strings = {"abcba", "abccba", "abcdba"};
System.out.println(isSymmetric(strings, 0));
System.out.println(isSymmetric(strings, 1));
System.out.println(isSymmetric(strings, 2));
System.out.println(isSymmetric(strings, 3));
}
}
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