Check the smartcontract for Array Tool written in Solidity language. Deployment on XInFin XDC is extremely easy and transaction cost is extremely low in compare with Ethereum.

Copy the code for Array Tool

pragma solidity ^0.4.24;
contract ArrayTools {
function _combineArray(uint256[] _array) internal pure returns(uint256) {
uint256 fullAmount;
for(uint256 i = 0; i < _array.length; i++) {
require(_array[i] > 0);
fullAmount += _array[i];
}
return fullAmount;
}
}