Example Contracts

You can deploy this to PulseChain Mainnet and test the RNG function immediately. A demo contract is provided that you can call with the provided ABI.

Test RNG

0x72114bBFfAb7e1159506d40A7BE2a48db5de8E53

Solidity

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IRNG {
    function Generate() external returns (uint64);
}

contract Test  {
    uint256[] list = new uint256[](6);
    address RNGContractAddress = 0xa96BcbeD7F01de6CEEd14fC86d90F21a36dE2143;
    IRNG RNGContract = IRNG(RNGContractAddress);
    uint256 picked = 0;

    constructor() {
        list[0] = 0;
        list[1] = 1;
        list[2] = 2;
        list[3] = 3;
        list[4] = 4;
        list[5] = 5;
    }

    function shuffle() public returns (uint256[] memory) {
        uint256[] memory _list = list;
        for (uint256 i = 0; i < list.length; i++) {
            uint64 rng = RNGContract.Generate();
            uint256 n = i + uint256(keccak256(abi.encodePacked(rng))) % (_list.length - i);
            uint256 temp = _list[n];
            _list[n] = _list[i];
            _list[i] = temp;
        }
        list = _list;
        return list;
    }

    function shuffleAndPickRandom() public returns (uint256) {
        uint256[] memory _list = shuffle();
        uint64 rng = RNGContract.Generate();
        picked = _list[rng % _list.length];
        return picked;
    }

    function viewList() public view returns (uint256[] memory) {
        return list;
    }

    function viewPicked() public view returns (uint256) {
        return picked;
    }

}

ABI

[
	{
		"inputs": [],
		"stateMutability": "nonpayable",
		"type": "constructor"
	},
	{
		"inputs": [],
		"name": "shuffle",
		"outputs": [
			{
				"internalType": "uint256[]",
				"name": "",
				"type": "uint256[]"
			}
		],
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [],
		"name": "shuffleAndPickRandom",
		"outputs": [
			{
				"internalType": "uint256",
				"name": "",
				"type": "uint256"
			}
		],
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [],
		"name": "viewList",
		"outputs": [
			{
				"internalType": "uint256[]",
				"name": "",
				"type": "uint256[]"
			}
		],
		"stateMutability": "view",
		"type": "function"
	},
	{
		"inputs": [],
		"name": "viewPicked",
		"outputs": [
			{
				"internalType": "uint256",
				"name": "",
				"type": "uint256"
			}
		],
		"stateMutability": "view",
		"type": "function"
	}