How can I make this code a recursive method?
for (int i = 3; i < arr.length; i++) {
writer.write(arr[i] + "\n");
strout += arr[i] + "\n";
}
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4Why would you want to make that recursive?h0p3zZ– h0p3zZ2022-04-20 19:36:04 +00:00Commented Apr 20, 2022 at 19:36
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i have only one for loop in my code and professor wants a recursive functionsolomonTEC– solomonTEC2022-04-21 16:12:08 +00:00Commented Apr 21, 2022 at 16:12
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i was finally able to get the recursive function to work in my code. there were a few things I had to change in order to make it happen. this is what i did to call the function. String strRec = printRecursive(writer,arr,3); writer.write(strRec); strout +=strRec;solomonTEC– solomonTEC2022-04-23 20:26:46 +00:00Commented Apr 23, 2022 at 20:26
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2 Answers
You can try encapsulating the code in a function:
public static String printRecursive(BufferedWriter writer, String[] arr, int i) throws IOException {
String strout = "";
if(i<arr.length) {
writer.write(arr[i] + "\n");
//System.out.println(arr[i] + "\n");
strout += arr[i] + "\n" + printRecursive(writer,arr,i+1);
}
return strout;
}
And you can call it from main:
String strRec = printRecursive(writer,arr,3);
I hope this help you.
Edited: Added writer according last comment
4 Comments
solomonTEC
when i add the above code block i get error. to create a class for writer.
Isma
I will try to help you, but I don't know how you have defined your writer because in your question I can't see this. Of course, you should declare inside the function if it isn't a general variable of the class. Also you can uncomment the System.out.println I wrote.
solomonTEC
try (BufferedWriter writer = new BufferedWriter(new FileWriter(symbol + ".csv"))) { writer.write("Date,Open,High,Low,Close,Adj Close,Volume\n"); for (int i = 3; i < arr.length; i++) { writer.write(arr[i] + "\n"); strout += arr[i] + "\n"; }
Isma
I've edited the answer above, you can add the writer as parameter.
Something like that?
let arr = [/* array elements */];
let idx = 3;
let stdout = "";
const recursiveMethod = () => {
writer.write(`${arr[idx]}\n`);
strout += `${arr[idx]}\n`;
if(idx < arr.length) {
idx++;
return recursiveMethod();
}
}
recursiveMethod();
