diff options
Diffstat (limited to 'productofdigits.c')
-rw-r--r-- | productofdigits.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/productofdigits.c b/productofdigits.c deleted file mode 100644 index 433c433..0000000 --- a/productofdigits.c +++ /dev/null @@ -1,50 +0,0 @@ -#include <stdlib.h> -#include <stdio.h> - -const char bigBoy[1001] = "73167176531330624919225119674426574742355349194934" - "96983520312774506326239578318016984801869478851843" - "85861560789112949495459501737958331952853208805511" - "12540698747158523863050715693290963295227443043557" - "66896648950445244523161731856403098711121722383113" - "62229893423380308135336276614282806444486645238749" - "30358907296290491560440772390713810515859307960866" - "70172427121883998797908792274921901699720888093776" - "65727333001053367881220235421809751254540594752243" - "52584907711670556013604839586446706324415722155397" - "53697817977846174064955149290862569321978468622482" - "83972241375657056057490261407972968652414535100474" - "82166370484403199890008895243450658541227588666881" - "16427171479924442928230863465674813919123162824586" - "17866458359124566529476545682848912883142607690042" - "24219022671055626321111109370544217506941658960408" - "07198403850962455444362981230987879927244284909188" - "84580156166097919133875499200524063689912560717606" - "05886116467109405077541002256983155200055935729725" - "71636269561882670428252483600823257530420752963450"; -// parseNum: Splits in segements of r, to find out the largest product of digits -// for that segment size -// max is the maximum product found within the number -// x: the number (as a char string) to be parsed -// r: the range to parse over -long long parseNum(const char *x, int r){ - int len = 1000; - long max; - for(int i = 0; i < len - r; i++){ - // Digits in ascii start at 48 - long long prod = (x[i] - 48); - for(int k = i + 1; k < i + r; k++) - prod *= (x[k] - 48); - if(prod > max) - max = prod; - } - return max; -} - - - -int main(){ - long long p = parseNum(bigBoy, 13); - printf("%ld\n", p); - //printf("%ld\n", parseNum(bigBoy, 13)); - return 0; -} |