Problem Seventeen

seventeen.js

function nameNumber( count ) {

    var ones = [ '', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten', 'eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen' ],
        tens = [ 'zero', 'ten', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety' ];

    // Thousands
    if ( count === 1000 ) {
        return 'one thousand';
    }

    // Under 20
    if ( count < 20 ) {
        return ones[ count ];
    } else {
        
        var countString = count + '',
            countSplit = countString.split( '' );

        // Under 100
        if ( count < 100 ) {
            return count % 10 === 0 ? tens[ countSplit[ 0 ] ] : tens[ countSplit[ 0 ] ] + ' ' + ones[ countSplit[ 1 ] ];
        } else {

            var countTens = parseInt( countSplit[ 1 ] + '' + countSplit[ 2 ] ),
                countPre = ones[ countSplit[ 0 ] ] + ' hundred';

            // Hundreds         
            if ( count % 100 === 0 ) {
                return countPre;
            } else {

                // Under 'twenties' per hundred
                if ( parseInt( countTens ) < 20 ) {
                    return countPre + ( count === 100 ? '' : ' and ' + ones[ countTens ] );
                } else {

                    // 'Tens' per hundred
                    if ( count % 10 === 0 ) {
                        return countPre + ' and ' + tens[ countSplit[ 1 ] ];
                    } else {
                        return countPre + ' and ' + ( countSplit[ 1 ] !== '0' ? tens[ countSplit[ 1 ] ] : '' ) + ' ' + ones[ countSplit[ 2 ] ];
                    }

                }
            }

        }

    }

    return '';
}

var counter = 0;

for (var i = 1; i <= 1000; i++) {
    counter += nameNumber( i ).replace(/ /g,'').length;
}

document.write( counter );