import java.util.ArrayList;
import java.util.List;

/**
 * FindTheOne
 * given an array of ints, find the one that start with 1
 */
public class FindTheOne {
  public static void main(String[] args) {

    int[] arr = { 1, 23, 123, 45, 67, 176 };
    System.out.println(OneOne(arr));
  }

  private static List<String> OneOne(int[] arr) {
    List<String> Ones = new ArrayList<>();
    String[] Convereted = new String[arr.length];
    for (int i = 0; i < arr.length; i++) {
      Convereted[i] = String.valueOf(arr[i]);
    }
    for (String str : Convereted) {
      if (str.startsWith("1")) {
        Ones.add(str);
      }
    }
    return Ones;
  }
}