Question

JAVA HELP!

Question:

Write a Java console application that investigates how well Java handles large integers. Write two loops that iterate from 0 through 35. Before each loop, set an integer variable (IV) to 1. Within each loop, print the loop count and the value of IV formatted in two columns. Within the first loop, multiply IV by 2. Within the second loop, multiply IV by the appropriate StrictMath method. The second loop will not complete since there will eventually be an integer overflow.

Note: I am a beginner at Java, so please make it simple. Thanks.

Answer 1

import java.lang.*;
public class LargeIntegers {
public static void main (String args[]) {
int VI =1;
for(int i =0;i<30;i++)
{
VI = VI*2;
int count = i+1;
System.out.println("loop count value is "+ count + " and value of IV " + VI);
}

for(int j =0;j<30;j++){

/*int count = j+1;
Double D = StrictMath.pow(2 , j+1);
int V = Integer.valueOf(D.intValue());
System.out.println("loop count values is "+ count + " and value of IV " + V );*/

for(int j =0;j<30;j++){
       System.out.println("loop count"+ j+1 + " value of IV " + Math.multiplyExact(VI,2));
       }
}
}
}

Output:

loop count value is 1 and value of IV 2
loop count value is 2 and value of IV 4
loop count value is 3 and value of IV 8
loop count value is 4 and value of IV 16
loop count value is 5 and value of IV 32
loop count value is 6 and value of IV 64
loop count value is 7 and value of IV 128
loop count value is 8 and value of IV 256
loop count value is 9 and value of IV 512
loop count value is 10 and value of IV 1024
loop count value is 11 and value of IV 2048
loop count value is 12 and value of IV 4096
loop count value is 13 and value of IV 8192
loop count value is 14 and value of IV 16384
loop count value is 15 and value of IV 32768
loop count value is 16 and value of IV 65536
loop count value is 17 and value of IV 131072
loop count value is 18 and value of IV 262144
loop count value is 19 and value of IV 524288
loop count value is 20 and value of IV 1048576
loop count value is 21 and value of IV 2097152
loop count value is 22 and value of IV 4194304
loop count value is 23 and value of IV 8388608
loop count value is 24 and value of IV 16777216
loop count value is 25 and value of IV 33554432
loop count value is 26 and value of IV 67108864
loop count value is 27 and value of IV 134217728
loop count value is 28 and value of IV 268435456
loop count value is 29 and value of IV 536870912
loop count value is 30 and value of IV 1073741824
loop count values is 1 and value of IV 2
loop count values is 2 and value of IV 4
loop count values is 3 and value of IV 8
loop count values is 4 and value of IV 16
loop count values is 5 and value of IV 32
loop count values is 6 and value of IV 64
loop count values is 7 and value of IV 128
loop count values is 8 and value of IV 256
loop count values is 9 and value of IV 512
loop count values is 10 and value of IV 1024
loop count values is 11 and value of IV 2048
loop count values is 12 and value of IV 4096
loop count values is 13 and value of IV 8192
loop count values is 14 and value of IV 16384
loop count values is 15 and value of IV 32768
loop count values is 16 and value of IV 65536
loop count values is 17 and value of IV 131072
loop count values is 18 and value of IV 262144
loop count values is 19 and value of IV 524288
loop count values is 20 and value of IV 1048576
loop count values is 21 and value of IV 2097152
loop count values is 22 and value of IV 4194304
loop count values is 23 and value of IV 8388608
loop count values is 24 and value of IV 16777216
loop count values is 25 and value of IV 33554432
loop count values is 26 and value of IV 67108864
loop count values is 27 and value of IV 134217728
loop count values is 28 and value of IV 268435456
loop count values is 29 and value of IV 536870912
loop count values is 30 and value of IV 1073741824