How to convert a bool array to a byte, and further to an integer?

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I want to convert a bool array (for example {true, true, false} ) to a byte (00000110)
and after converting to integer, it would be 6.

How would I code this in C#? Thanks for answering...

Posted 9-Jan-12 4:45am

VigneshPT

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BobJanova · Accepted Answer · 2012-01-09T05:12:00

Solution 2

Why go via a byte? You can go straight to uint. Unfortunately C#/.Net doesn't have bit booleans so I am not aware of a better approach than

uint BoolArrayToInt(bool[] bits){
 if(bits.Length > 32) throw new ArgumentException("Can only fit 32 bits in a uint");
 
 uint r = 0;
 for(int i = 0; i < bits.Length; i++) if(bits[i]) r |= 1 << (bits.Length - i);
 return r;
}

Posted 9-Jan-12 5:12am

BobJanova

Comments

VigneshPT 9-Jan-12 11:30am

Thanks for the reply... It was exactly what i was looking for.

Sergey Alexandrovich Kryukov 9-Jan-12 23:10pm

Exactly, a 5.
--SA

Prajwal Prakash 19-Mar-13 6:17am

i want to convert bool array into byte array such that bool[0] comes at byte[7] in c#. Can anyone please help me. Thank you

Mehdi Gholam · Accepted Answer · 2012-01-09T05:10:00

Solution 1

Take a look at the BitArray class, you can also look at my article which will compress the output integers here : Word Aligned Hybrid (WAH) Compression for BitArrays[^]