C$++$ why is my output only $1,3,4$ when i just want to remove $55.$

code:

template

class Collection$\{$

Objects $*$array; $//$ pointer dynamically allocate array

int currentSize;

int capacity;

public:

$//$ Constructor

Collection$($int capacity$)$ : capacity$($capacity$)\{$

array $=$ new Objects$[$capacity$]$;

$\}$

$//$ deconstructor to avoid memory leakage

~Collection$()\{$

delete$[]$ array;

$\}$

$//$ checks if collection is empty

bool isEmpty$()$const $\{$

return currentSize $==0$;

$\}$

int makeEmpty$()\{$

return currentSize $=0$;

$\}$

$//$ add more elements to the array if enough capacity.

void insert$($const Objects& n$)\{$

if$($currentSize $<$ capacity$)$

array$[$currentSize$++]=$ n;

else

std::cout $<<$ "Collection is full to enter another element" $<<$ std::endl;

$\}$

$//$ remove element from array.... but it doesn't work yet

void remove$($const Objects& index$)\{$

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

if$($array$[$i$]==$ index$)\{$

for$($int j $=$ i; j $<$ currentSize $-1$; $++$j$)\{$

array$[$j$]=$ array$[$j $+1]$;

$\}$

$\}$

currentSize$--$;

$\}$

$\}$

$//$ this functin will search the arrray if it contains specify number

$//$void contains$()\{\}$

$//$ prints the entire array

void print$()\{$

std::cout $<<$ "Collection contents: $"<<$ std::endl;

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

std::cout $<<$ array$[$i$]<<$ std::endl;

$\}$

$\}$

$\}$;

int main$()\{$

Collection Collection$(6)$;

Collection.insert$(1)$;

Collection.insert$(3)$;

Collection.insert$(4)$;

Collection.insert$(55)$;

Collection.insert$(23)$;

Collection.insert$(9)$;

int removeNum $=55$;

Collection.remove$($removeNum$)$;

Collection.print$()$;

return $0$;

$\}$

Thank you in advance!