herrryan

public class Solution {
    public boolean wordPattern(String pattern, String str) {
        if (pattern == null || str == null) return false;
        String[] words = str.split(" ");
        if (pattern.length() != words.length) return false;
        HashMap<Character, String> map = new HashMap<Character, String>();
        
        for (int i = 0; i < pattern.length(); i++){
            char c = pattern.charAt(i);
            String s = words[i];

herrryan

class Solution{
  public static void main(String[] args) {
    int[] a = {1, 2, 3, 5, 6, 7};
    rotateArray(a, 3);
    for (int i = 0; i < a.length; i++){
      System.out.print(a[i]);
    }
  }

  public static void rotateArray(int[] a, int k){