graphmatekt/fastInputReader/InputReader

InputReader

class InputReader @JvmOverloads constructor(stream: InputStream = DEFAULT_STREAM, bufferSize: Int = DEFAULT_BUFFER_SIZE)

A fast input reader for any java.io.InputStream (especially System.in).

This reader is optimized for competitive-programming style input and assumes well-formed data (it does not perform validation).

Author

William Fiset, william.alexandre.fiset@gmail.com. Auto translated to Kotlin by IntelliJ.

Constructors

InputReader

@JvmOverloads

constructor(stream: InputStream = DEFAULT_STREAM, bufferSize: Int = DEFAULT_BUFFER_SIZE)

constructor(bufferSize: Int)

Create an InputReader that reads from standard input.

Types

Companion

object Companion

Functions

fun close()

Closes the underlying input stream.

nextByte

fun nextByte(): Byte

Reads a single byte from the input stream.

nextByteArray

fun nextByteArray(n: Int): ByteArray

Reads an array of n byte values.

nextByteArray1

fun nextByteArray1(n: Int): ByteArray

Reads a 1-based byte array of size n + 1 (index 0 unused).

nextByteMatrix

fun nextByteMatrix(rows: Int, cols: Int): Array<ByteArray?>

Reads a rows x cols matrix of bytes.

nextByteMatrix1

fun nextByteMatrix1(rows: Int, cols: Int): Array<ByteArray?>

Reads a 1-based (rows + 1) x (cols + 1) matrix of bytes.

nextDouble

fun nextDouble(): Double

Reads the next token and parses it as a Double.

nextDoubleArray

fun nextDoubleArray(n: Int): DoubleArray

Reads an array of n double values.

nextDoubleArray1

fun nextDoubleArray1(n: Int): DoubleArray

Reads a 1-based double array of size n + 1 (index 0 unused).

nextDoubleArrayFast

fun nextDoubleArrayFast(n: Int): DoubleArray

Reads an array of n doubles using nextDoubleFast.

nextDoubleArrayFast1

fun nextDoubleArrayFast1(n: Int): DoubleArray

Reads a 1-based double array of size n + 1 using nextDoubleFast.

nextDoubleFast

fun nextDoubleFast(): Double

Reads the next token as a Double using a faster parsing path.

nextDoubleMatrix

fun nextDoubleMatrix(rows: Int, cols: Int): Array<DoubleArray?>

Reads a rows x cols matrix of doubles.

nextDoubleMatrix1

fun nextDoubleMatrix1(rows: Int, cols: Int): Array<DoubleArray?>

Reads a 1-based (rows + 1) x (cols + 1) matrix of doubles.

nextDoubleMatrixFast

fun nextDoubleMatrixFast(rows: Int, cols: Int): Array<DoubleArray?>

Reads a rows x cols matrix of doubles using nextDoubleFast.

nextDoubleMatrixFast1

fun nextDoubleMatrixFast1(rows: Int, cols: Int): Array<DoubleArray?>

Reads a 1-based (rows + 1) x (cols + 1) matrix of doubles using nextDoubleFast.

nextInt

fun nextInt(): Int

Reads a 32 bit signed integer from input stream.

nextIntArray

fun nextIntArray(n: Int): IntArray

Reads an array of n integer values.

nextIntArray1

fun nextIntArray1(n: Int): IntArray

Reads a 1-based integer array of size n + 1 (index 0 unused).

nextIntMatrix

fun nextIntMatrix(rows: Int, cols: Int): Array<IntArray?>

Reads a rows x cols matrix of integers.

nextIntMatrix1

fun nextIntMatrix1(rows: Int, cols: Int): Array<IntArray?>

Reads a 1-based (rows + 1) x (cols + 1) matrix of integers.

nextLine

fun nextLine(): String?

Reads a line from the input stream.

nextLong

fun nextLong(): Long

Reads a 64 bit signed long from input stream.

nextLongArray

fun nextLongArray(n: Int): LongArray

Reads an array of n long values.

nextLongArray1

fun nextLongArray1(n: Int): LongArray

Reads a 1-based long array of size n + 1 (index 0 unused).

nextLongMatrix

fun nextLongMatrix(rows: Int, cols: Int): Array<LongArray?>

Reads a rows x cols matrix of longs.

nextLongMatrix1

fun nextLongMatrix1(rows: Int, cols: Int): Array<LongArray?>

Reads a 1-based (rows + 1) x (cols + 1) matrix of longs.

nextString

fun nextString(): String?

Reads the next token as a string.

nextStringArray

fun nextStringArray(n: Int): Array<String?>

Reads an array of n string tokens.

nextStringArray1

fun nextStringArray1(n: Int): Array<String?>

Reads a 1-based string array of size n + 1 (index 0 unused).

nextStringMatrix

fun nextStringMatrix(rows: Int, cols: Int): Array<Array<String?>?>

Reads a rows x cols matrix of string tokens.

nextStringMatrix1

fun nextStringMatrix1(rows: Int, cols: Int): Array<Array<String?>?>

Reads a 1-based (rows + 1) x (cols + 1) matrix of string tokens.