solve problem 8

This commit is contained in:
Colin McMillen 2020-11-18 18:13:51 -05:00
parent 1283c803b8
commit 09ddcab5a4

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@ -155,8 +155,47 @@ namespace Euler {
return result; return result;
} }
[Fact]
static long Problem8() {
string number =
"73167176531330624919225119674426574742355349194934" +
"96983520312774506326239578318016984801869478851843" +
"85861560789112949495459501737958331952853208805511" +
"12540698747158523863050715693290963295227443043557" +
"66896648950445244523161731856403098711121722383113" +
"62229893423380308135336276614282806444486645238749" +
"30358907296290491560440772390713810515859307960866" +
"70172427121883998797908792274921901699720888093776" +
"65727333001053367881220235421809751254540594752243" +
"52584907711670556013604839586446706324415722155397" +
"53697817977846174064955149290862569321978468622482" +
"83972241375657056057490261407972968652414535100474" +
"82166370484403199890008895243450658541227588666881" +
"16427171479924442928230863465674813919123162824586" +
"17866458359124566529476545682848912883142607690042" +
"24219022671055626321111109370544217506941658960408" +
"07198403850962455444362981230987879927244284909188" +
"84580156166097919133875499200524063689912560717606" +
"05886116467109405077541002256983155200055935729725" +
"71636269561882670428252483600823257530420752963450";
int numDigits = 13;
long maxProduct = 0;
for (int i = 0; i < number.Length - numDigits; i++) {
long product = 1;
for (int j = i; j < i + numDigits; j++) {
int digit = Int32.Parse(number.Substring(j, 1));
product *= digit;
}
if (product > maxProduct) {
maxProduct = product;
}
}
Assert.Equal(23514624000, maxProduct);
return maxProduct;
}
static void Main(string[] args) { static void Main(string[] args) {
WriteLine(Problem7()); WriteLine(Problem8());
} }
} }
} }