Determine the order of magnitude for method $1$ implemented in Java below. Unlike the previous question, you do not need to count the total number of statement executions to come up with a precise big$-$Oh; instead, you can use the shortcut rules covered in the lecture for computing the big$-$Oh$.$ Notice that method $1$ includes a statement that calls method $2.$

public static int method$1($int arr$[],$ int diff$)\{$

int count $=0$;

for$($int i $=0$; i $<$ arr.length; i$++)\{$

int num $=$ arr$[$i$]-$ diff;

boolean hasNum $=$ method$2($arr$,$ i$+1,$ num$)$;

if$($hasNum$)\{$

count $+=1$;

$\}$

$\}$

return count;

$\}$

public static boolean method$2($int arr$[],$ int index, int d$)\{$

for$($; index $<$ arr.length; index $+=1)\{$

if$($arr$[$index$]==$ d$)\{$

return true;

$\}$

$\}$

return false;

$\}$