Check.sol

pragma solidity ^0.8.0;

contract Check {

    function check0(address[] calldata stuff) external view returns (uint256) {
        uint256 startGas = gasleft();

        uint256 counter;
        for (uint256 i; i< stuff.length; i++) {
            counter++;
        }

        return startGas - gasleft();
    }

    function check1(address[] calldata stuff) external view returns (uint256) {
        uint256 startGas = gasleft();

        uint256 counter;

        uint256 len = stuff.length;
        for (uint256 i; i< len; i++) {
            counter++;
        }

        return startGas - gasleft();
    }
}