Determine if a string is squeezable: Difference between revisions

</pre>

=={{header|C sharp}}==

<lang csharp>using System;

using static System.Linq.Enumerable;

public class Program

{

static void Main()

{

SqueezeAndPrint("", ' ');

SqueezeAndPrint("\"If I were two-faced, would I be wearing this one?\" --- Abraham Lincoln ", '-');

SqueezeAndPrint("..1111111111111111111111111111111111111111111111111111111111111117777888", '7');

SqueezeAndPrint("I never give 'em hell, I just tell the truth, and they think it's hell. ", '.');

string s = " --- Harry S Truman ";

SqueezeAndPrint(s, ' ');

SqueezeAndPrint(s, '-');

SqueezeAndPrint(s, 'r');

}

static void SqueezeAndPrint(string s, char c) {

Console.WriteLine($"squeeze: '{c}'");

Console.WriteLine($"old: {s.Length} «««{s}»»»");

s = Squeeze(s, c);

Console.WriteLine($"new: {s.Length} «««{s}»»»");

}

static string Squeeze(string s, char c) => string.IsNullOrEmpty(s) ? "" :

s[0] + new string(Range(1, s.Length - 1).Where(i => s[i] != c || s[i] != s[i - 1]).Select(i => s[i]).ToArray());

}</lang>

{{out}}

<pre>

squeeze: ' '

old: 0 «««»»»

new: 0 «««»»»

squeeze: '-'

old: 72 «««"If I were two-faced, would I be wearing this one?" --- Abraham Lincoln »»»

new: 70 «««"If I were two-faced, would I be wearing this one?" - Abraham Lincoln »»»

squeeze: '7'

old: 72 «««..1111111111111111111111111111111111111111111111111111111111111117777888»»»

new: 69 «««..1111111111111111111111111111111111111111111111111111111111111117888»»»

squeeze: '.'

old: 72 «««I never give 'em hell, I just tell the truth, and they think it's hell. »»»

new: 72 «««I never give 'em hell, I just tell the truth, and they think it's hell. »»»

squeeze: ' '

old: 72 ««« --- Harry S Truman »»»

new: 20 ««« --- Harry S Truman »»»

squeeze: '-'

old: 72 ««« --- Harry S Truman »»»

new: 70 ««« - Harry S Truman »»»

squeeze: 'r'

old: 72 ««« --- Harry S Truman »»»

new: 71 ««« --- Hary S Truman »»»