I want to create a program that randomly prints out a line from a .txt file. This is where I'm currently at, and the only other similar questions I could find were in other languages. For example, Python with the random.choice() operation, which I found in this question: How to choose a random line from a text file
Thank you all for your time!
fun main() {
val file = "text.txt"
println(file.random("text.txt")) //This code doesn't work, I'm just illustrating what I was looking to do.
}
Edits I felt were necessary: The libraries I'm Importing.
import java.io.FileReader
import kotlin.system.exitProcess
import java.io.FileWriter
import kotlin.random.Random
More things I've learned:
There is a function RandomAccessFile which is used for the exact purpose of what I want to do, however, I am not finding any good sources for how to use it within Kotlin.
Edits for Comments: I can read from the file and when I do so all of the lines get printed in order.
1: I know how to generate random numbers, however, I don't know how to add that to the .txt file.
2: I attempted to use the following code to be able to add a number corresponding to the line it was on, however, this code gave me an error for running where the i variable was not understood as an existing number.
ERRORED CODE BELOW AND IN PASTEBIN FOR TIDYNESS. https://pastebin.com/FxFWjv37
fun main() {
var i = 1
println("Please input a value, type DONE when done, READ to print.")
val loop = 0
while (loop < 1) {
var response = readLine()
if (response == "DONE") {
exitProcess(0)
}else if (response== "READ") {
RandomRead()
} else {
WriteToFile(i + response)
i+1
}
}
}
Error:(23, 31) Kotlin: None of the following functions can be called with the arguments supplied:
public final operator fun plus(other: Byte): Int defined in kotlin.Int
public final operator fun plus(other: Double): Double defined in kotlin.Int
public final operator fun plus(other: Float): Float defined in kotlin.Int
public final operator fun plus(other: Int): Int defined in kotlin.Int
public final operator fun plus(other: Long): Long defined in kotlin.Int
public final operator fun plus(other: Short): Int defined in kotlin.Int
I also attempted:
fun main() {
println("Please input a value, type DONE when done, READ to print.")
val loop = 0
while (loop < 1) {
var response = readLine()
if (response == "DONE") {
exitProcess(0)
}else if (response== "READ") {
RandomRead()
} else {
WriteToFile(response)
}
}
}
fun WriteToFile(str: String?) {
var i = 0
try {
var fo=FileWriter("test.txt")
fo.write(i + " " + str + "\n")
fo.close()
i+1
}catch (ex:Exception){
println(ex.message)
}
}
Error:(37, 20) Kotlin: None of the following functions can be called with the arguments supplied:
public final operator fun plus(other: Byte): Int defined in kotlin.Int
public final operator fun plus(other: Double): Double defined in kotlin.Int
public final operator fun plus(other: Float): Float defined in kotlin.Int
public final operator fun plus(other: Int): Int defined in kotlin.Int
public final operator fun plus(other: Long): Long defined in kotlin.Int
public final operator fun plus(other: Short): Int defined in kotlin.Int
