how to compare two string arrays without java utils

Question

Check to see if the array arr1 contain the same elements as arr2 in the same order in java.

for example:

    isTheSame({\"1\", \"2\", \"3\"}, {\"1\",         


        

Answer 1

public boolean isTheSame(String[] arr1, String[] arr2)
{
    if (arr1.length == arr2.length)
    {
         for (int i = 0; i < arr1.length; i++)
          {
             if ((arr1[i] != null && arr2[i] != null && !arr1[i].equals(arr2[i]))
                 || (arr1[i] != null && arr2[i] == null) || 
                 (arr2[i] != null && arr1[i] == null))
              {
                return false;
              }
          }
    } else {
         return false;  
    }
    return true;  
 }

But it is very unoptimal.