Project Euler #8
In JavaScript:
(function(){
//assign the whole thing into a string
//convert the string into an array
//loop through the array
//starting with the first 5, add up the values of the array and store it
//compare the next set with the previous set, if it's bigger, store it, it smaller, toss it out
//99879 - 42
var number = "7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450";
var high = 0, five = [];
for (var i = 0; i < number.length; i++){
var c = number.charAt(i);
five.push(c);
if (five.length > 5){
five.shift();
}
if (five.length === 5){
var total = 0;
for (var j = 0; j < five.length; j++){
total += five[j] - 0;
if (total > high){
high = total;
}
}
}
}
document.write(high, "<br />");
})();
on GitHub