EFI Interview Question for Software Engineers


Country: India
Interview Type: In-Person




Comment hidden because of low score. Click to expand.
1
of 1 vote

In ZoomBA, or rather any other language, the logic should be clear like this :

// get file iterator - line by line 
fi1 = file('large1.txt')
fi2 = file('large2.txt')
fo = open('merged' ,'w')
// when both are non empty - interleave 
while ( fi1.hasNext && fi2.hasNext  ){
  fo.println( fi1.next )
  fo.println( fi2.next )  
}
// when one is leftover, find it and drop lines 
if ( fi1.hasNext || fi2.hasNext ){
  leftover = fi1.hasNext ? fi1 : fi2 
  while ( leftover.hasNext ){
    fo.println( leftover.next )  
  }
}
// do not forget to close 
fo.close()

- NoOne December 20, 2016 | Flag Reply
Comment hidden because of low score. Click to expand.
1
of 1 vote

package com.practice;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.OutputStreamWriter;
import java.io.Writer;

public class InterleaveLines {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String fileName1 = "src/com/practice/fileName1";
		String fileName2 = "src/com/practice/fileName2";
		interleaveLines(fileName1, fileName2);
	}
	
	public static void interleaveLines(String fileName1, String fileName2) {
		BufferedWriter writer = null;
		System.out.println(new File(".").getAbsoluteFile());
		try {
			File newFile = new File("src/com/practice/interleave");
			writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile)));
			BufferedReader reader1 = new BufferedReader(new FileReader(fileName1));
			BufferedReader reader2 = new BufferedReader(new FileReader(fileName2));
			String line1 = reader1.readLine(); 
			String line2 = reader2.readLine();
			while (line1 != null && line2 != null) {
				writer.write(line1);
				writer.newLine();
				writer.write(line2);
				writer.newLine();
				line1 = reader1.readLine();
				line2 = reader2.readLine();
			}
			if (line1 != null || line2 != null) {
				BufferedReader reader = line1 != null ? reader1 : reader2;
				String line = line1 != null? line1: line2;
				while (line != null) {
					writer.write(line);
					writer.newLine();
					line = reader.readLine();
				}
			}
		}
		catch(Exception e) {
			System.out.println(e.toString());
		}
		finally {
			try {
				writer.close();
			}
			catch (Exception ex) {
				/*ignore*/
			}
		}
	}

}

- Anonymous December 20, 2016 | Flag Reply


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