Largest 5 digit number in a series test

Benchmark created on

Setup

var number = "7316717653133062491922511967442657474235534919493496983520368542506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753123457977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257540920752963450"
  
  var actual = solution(number);

Test runner

Ready to run.

Testing in
TestOps/sec
1
function solution(digits){
  if (digits.length <= 5) return Number(digits);
  return Math.max(Number(digits.substr(0, 5)), solution(digits.substr(1)));
}
ready
2
function solution(digits){
  var r = 0;
  for (i = 0; i < digits.length - 4; i++) {
    r = Math.max(r, parseInt(digits.substr(i,5),10));
  }
  return r;
}
ready
3
function solution(digits) {

 var numbers = digits.split('').map(function(v) { return +v; }),
     result = [],
     idx = numbers.indexOf(9);
     
 while (idx != -1) {
   result.push(+numbers.slice(idx, idx + 5).join(''));
   idx = numbers.indexOf(9, idx + 1);
 }
 
 return result.sort().pop();
}
ready

Revisions

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