Save Duplicate Values From String [duplicate]

Question

I have:

string turtle = "turtle"
var charArray = turtle.ToCharArray()

When I do:

var distinct = charArray.Distinct().ToArray()
// distinct = ["t","u","r","l","e"]

My question is:

How do I save the characters that got deleted from charArray when I called Distinct on it? How do I get the variable distinct to equal "t" (the character that was removed)

Thanks!

remove string distinct from the input string (turtle) and get the delete characters. see this - stackoverflow.com/questions/2201595/… — Wasi Ahmad
– Wasi Ahmad, Commented Oct 31, 2016 at 15:39

Pankaj · Accepted Answer · 2016-11-01 19:10:13Z

2

Use GroupBy to return only the letters having count > 1:

string turtle = "turtle";
var dups = (from l in turtle
            group 1 by l into g
            where g.Count() > 1
            select g.Key).ToList();

edited Nov 1, 2016 at 19:10

Pankaj

10.2k40 gold badges152 silver badges298 bronze badges

answered Oct 31, 2016 at 15:39

Gilad Green

37.3k7 gold badges67 silver badges99 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

UtopiaLtd · Accepted Answer · 2016-10-31 15:40:08Z

1

var nonUniqueChars = charArray.GroupBy(x => x)
.Where(x => x.Count() > 1)
.Select(x => x.First())

This will organize group all the characters that appear, find the ones that appear more than once, and then pull a single instance of each such character.

answered Oct 31, 2016 at 15:40

UtopiaLtd

2,5802 gold badges32 silver badges46 bronze badges

Collectives™ on Stack Overflow

Save Duplicate Values From String [duplicate]

2 Answers 2

Comments

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Linked

Related