You are provided with a function that determines whether an array of integers has any duplicate elements. However, the given code returns incorrect results. Your task is to locate and fix the bugs in the code by injecting print statements and observing how the check for duplicates is performed.

$/*$

Check if an array contains duplicate elements.

param arr: an array of integers.

param size: size of the input array.

return: whether array contains duplicates.

TODO: Debug the code to address incorrect result!

$*/$

bool containsDuplicates$($int arr$[],$ int size$)\{$

$//$ Nested for loops to compare each element with every other element in the array.

for $($int i $=0$; i $<$ size; i$++)\{$

for $($int j $=0$; j $<$ size; j$++)\{$

$//$ If the same element is found at different positions, return true $($indicating duplicates$).$

if $($arr$[$i$]==$ arr$[$j$])\{$

return true;

$\}$

$\}$

$\}$

$//$ If no duplicates are found, return false.

return false;