C#•3y ago

A way to get an integer input quickly?

Recently i'm trying to do competitive programming with C# and i'm curious if there's a way to get an (array of) integer input. The method I all know is this

// for an array of integers
int[] arrayInput = Console.ReadLine().Split(' ').Select(Int32.Parse).ToArray()
// for one integer
int singleInput = Int32.Parse(Console.ReadLine())

// for an array of integers
int[] arrayInput = Console.ReadLine().Split(' ').Select(Int32.Parse).ToArray()
// for one integer
int singleInput = Int32.Parse(Console.ReadLine())

6 Replies

Angius•3y ago

That's the way

hanuOP•3y ago

is this the fastest? or the same mechanism as other stdin functions like scanf in C/C++?

Angius•3y ago

Assuming all input is correct, I can't think of a more performant way

hanuOP•3y ago

hm got it

Angius•3y ago

I guess benchmarking .Select() vs a loop would be one thing Or you could play around with Console.Read() and try assembling the numbers yourself, based on the chars the user enters Might want to ask in #advanced as well, there might be some super low-level way of reading the chars directly from the buffer or something

hanuOP•3y ago

okay i got curious if there's some low-level thingy that i might be able to try thanks

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A way to get an integer input quickly?