62 lines
No EOL
1.4 KiB
Java
62 lines
No EOL
1.4 KiB
Java
import java.io.File;
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import java.io.FileNotFoundException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Scanner;
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class Generic {
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/*
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* Expects two command line arguments:
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* - The file name to load
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* - The number of top values to sum together
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*/
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public static void main (String[] args) {
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Scanner f;
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try {
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f = Generic.readFile(args[0]);
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} catch (FileNotFoundException e) {
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System.out.println("File not found, stopping execution");
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return;
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}
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Integer count = Integer.parseInt(args[1]);
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ArrayList<Integer> top = new ArrayList<Integer>();
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Integer runningSum = 0;
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while (f.hasNextLine()) {
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String l = f.nextLine();
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if (l.equals("")) {
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if (top.size() < count) {
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top.add(runningSum);
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}
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else if (Collections.min(top) < runningSum) {
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top.add(runningSum);
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top.removeIf(x -> x <= Collections.min(top));
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}
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runningSum = 0;
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} else {
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runningSum = runningSum + Integer.parseInt(l);
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}
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}
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f.close();
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Collections.sort(top, Collections.reverseOrder());
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System.out.print(
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"The largest " + count + " values are: "
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+ top.subList(0, count).toString()
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+ " totalling: "
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);
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Integer sum = 0;
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for (int i = 0; i < count; i++) {
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sum = sum + top.get(i);
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}
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System.out.println(sum);
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}
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private static Scanner readFile(String file) throws FileNotFoundException {
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File f = new File(file);
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Scanner s = new Scanner(f);
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return s;
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}
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} |