Align columns: Difference between revisions
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=={{header|C sharp}}==
===Old version===
Uses a delegate, which were added to the language in C# 2, to define left-, right-, or center-justified.
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}</lang>
===Newer version===
Uses features of newer versions, like LINQ, lambdas and switch expressions.
{{works with|C sharp|C#|8+}}
<lang csharp>using System;
Given a text file of many lines, where fields within a line▼
using System.Linq;
are delineated by a single 'dollar' character, write a program ▼
that aligns each column of fields by ensuring that words in each▼
enum Justification { Left, Center, Right }
column are separated by at least one space. ▼
Further, allow for each word in a column to be either left▼
public class Program
justified, right justified, or center justified within its column. ▼
{
static void Main()
{
string text =
@"Given$a$text$file$of$many$lines,$where$fields$within$a$line$
are$delineated$by$a$single$'dollar'$character,$write$a$program
that$aligns$each$column$of$fields$by$ensuring$that$words$in$each$
column$are$separated$by$at$least$one$space.
Further,$allow$for$each$word$in$a$column$to$be$either$left$
justified,$right$justified,$or$center$justified$within$its$column.";
AlignColumns(text, Justification.Left);
Console.WriteLine();
AlignColumns(text, Justification.Center);
Console.WriteLine();
AlignColumns(text, Justification.Right);
}
public static void AlignColumns(string text, Justification justification) =>
AlignColumns(text.Split(Environment.NewLine), justification);
public static void AlignColumns(string[] lines, Justification justification) =>
AlignColumns(lines.Select(line => line.Split('$')).ToArray(), justification);
public static void AlignColumns(string[][] table, Justification justification)
{
Console.WriteLine(justification + ":");
int columns = table.Max(line => line.Length);
var columnWidths =
Enumerable.Range(0, columns)
.Select(i => table.Max(line => i < line.Length ? line[i].Length : 0)
).ToArray();
foreach (var line in table) {
Console.WriteLine(string.Join(" ",
Enumerable.Range(0, line.Length)
.Select(i => justification switch {
Justification.Left => line[i].PadRight(columnWidths[i]),
Justification.Right => line[i].PadLeft(columnWidths[i]),
_ => line[i].PadLeft(columnWidths[i] / 2).PadRight(columnWidths[i])
})
));
}
}
}</lang>
{{out}}
<pre style="height:30ex;overflow:scroll">
Left:
Given a text file of many lines, where fields within a line
are delineated by a single 'dollar' character, write a program
that aligns each column of fields by ensuring that words in each
column are separated by at least one space.
Further, allow for each word in a column to be either left
Center:
justified, right justified, or center justified within its column.
Right:
Given a text file of many lines, where fields within a line
are delineated by a single 'dollar' character, write a program
that aligns each column of fields by ensuring that words in each
column are separated by at least one space.
Further, allow for each word in a column to be either left
justified, right justified, or center justified within its column.</pre>
=={{header|C++}}==
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