Example implementation of solidity mapping

MapExample.sol

pragma solidity ^0.4.0;
    
import "github.com/willitscale/solidity-util/lib/Strings.sol";

contract MapExample {
    
    using Strings for string;
    
    // This would be the same as mapping(string => uint)
    string[] mapKeys;
    uint[] mapValues;
    
    // This would be the same as map["myKey"];
    function getValue(string key)
        public
        returns (uint) {
        for(uint i = 0; i < mapKeys.length; i++) {
            if (mapKeys[i].compareTo(key)) {
                return mapValues[i];
            }
        }
        // Nothing was found so an invalid key was specified
        revert();
    }
    
    // This would be the same as map["myKey"] = 123;
    function setValue(string key, uint value)
        public {
        mapKeys.push(key);
        mapValues.push(value);
    }
}

function setValue(string key, uint value)
        public {
        mapKeys.push(key);
        mapValues.push(value);
    }

is this the same

function setValue(string key, uint value)
        public {
        mapKeys[key] = mapValues[value];
    }