Write `eq(string memory a, string memory b)` returning `true` when `keccak256(bytes(a)) == keccak256(bytes(b))`.
Required in your answer: keccak256(bytes(a))keccak256(bytes(b))
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
contract Eq {
function eq(string memory a, string memory b) external pure returns (bool) {
// TODO
}
}