Utsav
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- 3
8of 8 votes
AnswersConsider 10 years down the line we have a mobile device which have 10 TB hard disk.Consider the device a file of 5TB and RAM on the device is 1GB. How will you sort the file of 5TB. You can use extra space but RAM is 1GB which is used by other application on the device also.
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Morgan Stanley Senior Software Development Engineer - 9
0of 0 votes
AnswersWrite a Program in Java, You have an Employee class |
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class Employee{
String name;
Integer id,
Employee manager
}
Each employee has a manager and the manager of CEO is null. Find all direct and indirect reportees of a manager.
Eg. Say Employee e1 reports to CEO,
e2 and e3 reports to e1,
e4 and e5 reports to e2,
e6 reports to e3.
Then by giving e1 as input, output should be e2, e3, e4, e5 and e6.| Report Duplicate | Flag | PURGE
Morgan Stanley Senior Software Development Engineer Java - 13
0of 0 votes
AnswersWrite a Java Program in which a class takes four integer arguments as input(a, b, c and d). Do addition of (a+b) on one thread, addition of (c+d) on another thread and multiplication of(a+b) * (c+d)) on main thread.
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Like: Thread1 = (a+b)
Thread2 = (c+d)
Main Thread = (Thread1 * Thread2)| Report Duplicate | Flag | PURGE
JP Morgan Senior Software Development Engineer Java
In q and k lang:
d:`ceo`e1`e2`e3!(`e1;(`e2`e3);(`e4`e5);`e6) / Map of Boss to subordinate
f:{l:{d@x}\[x];$[0<(#)m:((,//)l)except(`;x);m;`NoSubordinate]} / function to return subordinate
Test:
f[`e1] /- output `e2`e3`e4`e5`e6
f[`e2] /- output `e4`e5
f[`e4] /- output `NoSubordinate
A solution in q language:
f:{ / function to sort the elements of the array
c0::c1::c2::0; / counter variables
{$[0=x;c0+:1;1=x;c1+:1;2=x;c2+:1;::]} each x; / inner function to count occurrence of each element
:raze [[(c0;c1;c2)]{#[x;y]}'til 3]; / returning the occurrence of 0,1,2 based on count
};
Test:
a:0 1 1 0 2 1 2; / array initialization
f a / calling the function
Output: 0 0 1 1 1 2 2
import java.util.concurrent.Callable;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
public class AddNumbersUsingExecutorService {
public static void main(String[] args) throws Exception{
// TODO Auto-generated method stub
CopyOnWriteArrayList<Integer> al = new CopyOnWriteArrayList<>();
AddNumService[] an = {new AddNumService(10, 20),
new AddNumService(30, 40)
};
ExecutorService service = Executors.newFixedThreadPool(2);
for(AddNumService an1 : an){
Future<Integer> f = service.submit(an1);
al.add(f.get());
}
service.shutdown();
System.out.println(al.get(0) * al.get(1));
al = null;
}
}
class AddNumService implements Callable<Integer>{
int num1, num2;
public AddNumService(int num1, int num2) {
// TODO Auto-generated constructor stub
this.num1 = num1;
this.num2 = num2;
}
@Override
public Integer call() throws Exception {
// TODO Auto-generated method stub
System.out.println(Thread.currentThread().getName());
return num1 + num2;
}
}
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k solution:
f:{c0::c1::c2::0;{$[0=x;c0+:1;1=x;c1+:1;2=x;c2+:1;::]}'x;,/(c0;c1;c2){#[x;y]}'!3}Test:
- Utsav November 18, 2019> f 0 1 1 0 2 1 2 /- output 0 0 1 1 1 2 2
> f 0 1 2 0 1 2 0 1 2 /- output - 0 0 0 1 1 1 2 2 2