Sha256: 76d2b7758ef2f56c9e4a135871b89783ca0fda1bc58219aee02704164133100f
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Size: 1.11 KB
Versions: 396
Compression:
Stored size: 1.11 KB
Contents
using System;
using System.Collections.Generic;
using System.Linq;
public static class LargestSeriesProduct
{
public static long GetLargestProduct(string digits, int span) => GetSlices(ParseDigits(digits), span).Max(l => GetProduct(l));
private static IEnumerable<IEnumerable<long>> GetSlices(long[] digits, int span)
{
if (span < 0 || span > digits.Length)
{
throw new ArgumentException("Invalid span.");
}
return Enumerable.Range(0, GetNumberOfSlices(digits, span)).Select(i => digits.Skip(i).Take(span));
}
private static long[] ParseDigits(string digits) => digits.ToCharArray().Select(ParseDigit).ToArray();
private static long ParseDigit(char c)
{
if (!char.IsDigit(c))
{
throw new ArgumentException("Invalid digit.");
}
return long.Parse(c.ToString());
}
private static long GetProduct(IEnumerable<long> numbers) => numbers.Aggregate(1L, (x, product) => x * product);
private static int GetNumberOfSlices(long[] digits, int span) => digits.Length + 1 - span;
}
Version data entries
396 entries across 396 versions & 1 rubygems