ArrayUtility.java

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public class ArrayUtility
{
     public static int[] addElement(int[] current, int elem)
     {
          int[] to_return = new int[current.length+1];
          for(int i=0; i<current.length; i++)
               to_return[i]=current[i];
          to_return[to_return.length-1]=elem;
          return to_return;
     }

     public static int[] deleteElement(int[] current, int index)
     {
          int[] to_return = new int[current.length-1];
          for(int i=0,j=0; i<current.length; i++,j++)
               if(i==index)
                    j--;
               else
                    to_return[j] = current[i];
          return to_return;
     }

     public static int linearSearch(int[] current, int value)
          {
               for(int i=0; i<current.length; i++)
                    if(current[i]==value)
                         return i;
               return -1;
          }
}