Write a program to find the greatest product of five consecutive digits in a 1000-digit number.
Updated: Sept. 19, 2021 — Training Time: 1 Minute
Overseen by: Archangel Macsika
Difficulty: Intermediate.
Companies who previously asked this: -.
Objective: Find the greatest product of five consecutive digits in the 1000-digit number below.
73167176531330624919225119674426574742355349194934 96983520312774506326239578318016984801869478851843 85861560789112949495459501737958331952853208805511 12540698747158523863050715693290963295227443043557 66896648950445244523161731856403098711121722383113 62229893423380308135336276614282806444486645238749 30358907296290491560440772390713810515859307960866 70172427121883998797908792274921901699720888093776 65727333001053367881220235421809751254540594752243 52584907711670556013604839586446706324415722155397 53697817977846174064955149290862569321978468622482 83972241375657056057490261407972968652414535100474 82166370484403199890008895243450658541227588666881 16427171479924442928230863465674813919123162824586 17866458359124566529476545682848912883142607690042 24219022671055626321111109370544217506941658960408 07198403850962455444362981230987879927244284909188 84580156166097919133875499200524063689912560717606 05886116467109405077541002256983155200055935729725 71636269561882670428252483600823257530420752963450
Input: 1000-digit number.
Expected Output: Find out.
Sikademy Solution
package sikademy;
/**
*
* @author Archangel Macsika
*/
import java.math.BigInteger;
import java.util.logging.Logger;
// This class finds the greatest product of five consecutive digits in the given 1000 digit number.
public class ProductOfFiveDigits {
private static final Logger LOG=Logger.getLogger(ProductOfFiveDigits.class.getName());
public static void main(String[] args) {
LOG.info("Into main");
String number="7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450";
int listOfNumber[]=new int[1000];
int max=0;
for(int index=0; index < 1000;index++){
listOfNumber[index]=number.charAt(index)-48;
}
for(int count=0;count < 996;count++){
int product = listOfNumber[count]*listOfNumber[count+1]*listOfNumber[count+2]*listOfNumber[count+3]*listOfNumber[count+4];
LOG.info("The product of " + listOfNumber[count] + " " + listOfNumber[count+1] + " " + listOfNumber[count+2] + " " + listOfNumber[count+3] + " " + listOfNumber[count+4] + "is:" + product);
if(product>max){
max=product;
}
}
LOG.info("The greatest five digit product is : "+max);
}
}