Function_Gas.sol

pragma solidity ^0.5.0;

contract Mul
{
    function Mul_v1(uint[50] calldata array, uint i, uint j) external pure returns(uint c) { return array[i] * array[j]; }
    function Mul_v2(uint[50] memory array, uint i, uint j) public pure returns(uint c) { return array[i] * array[j]; }
    function Mul_v3(uint[50] memory array, uint i, uint j) internal pure returns(uint c) { return array[i] * array[j]; }
}


//Deriving from Mul contract
contract Cof is Mul
{
    uint[50] private data;
    
    constructor() public
    {
        data[0] = 5;
        data[49] = 2;
    }
    
    function Cof_v1() public view returns(uint r) { return this.Mul_v1(data, 0, 49); }
    function Cof_v2() public view returns(uint r) { return Mul_v2(data, 0, 49); }
    function Cof_v3() public view returns(uint r) { return Mul_v3(data, 0, 49); }
}


//Referencing to Mul contract
contract Pow
{
    uint[50] private data;
    Mul private m;
    
    constructor() public
    {
        m = new Mul();
        data[0] = 5;
    }
    
    function Pow_v1() public view returns(uint r) { return m.Mul_v1(data, 0, 0); }
    function Pow_v2() public view returns(uint r) { return m.Mul_v2(data, 0, 0); }
}