Run-length encoding: Difference between revisions
Content deleted Content added
→Linq: More idiomatic Linq and faster |
→Linq: Updated short linq solution to match |
||
Line 733: | Line 733: | ||
using System.Linq; |
using System.Linq; |
||
using static System.Console; |
using static System.Console; |
||
using MoreLinq; // best/most popular addon library for linq - NOT using built in runlengthencoding() method here |
|||
namespace RunLengthEncoding |
namespace RunLengthEncoding |
||
{ |
{ |
||
static class Program |
static class Program |
||
{ |
{ |
||
public static string Encode(string input) => input |
public static string Encode(string input) => input.Length ==0 ? "" : input.Skip(1) |
||
. |
.Aggregate((t:input[0].ToString(),o:Empty<string>()), |
||
(a,c)=>a.t[0]==c ? (a.t+c,a.o) : (c.ToString(),a.o.Append(a.t)), |
|||
a=>a.o.Append(a.t).Select(p => (key: p.Length, chr: p[0]))); |
|||
public static string Decode(IEnumerable<(int i , char c)> input) => |
public static string Decode(IEnumerable<(int i , char c)> input) => |