How many times does the following loop execute? double d; Random generator = new Random(); double x = generator. nextDouble() * 100; do { d = Math. sqrt(x) * Math. sqrt(x) - x; System. out. println(d); x = generator. nextDouble() * 10001; } while (d != 0); exactly once exactly twice can't be determined always infinite loop

The number of execution can't always be determines

Explanation:

The following points should be noted

Variable d relies on variable x (both of double data type) for its value

d is calculated as

Mere looking at the above expression, the value of d should be 0;

However, it doesn't work that way.

The variable x can assume two categories of values

The range of the above values depend on the system running  the application;

When variable x assumes a small value,

will definitely result in 0 and the loop will terminate immediately because

When variable x assumes a large value,

will not result in 0  because their will be

The reason for this that, the compiler will approximate the value of and this approximation will not be equal to

Hence, the loop will be executed again.

Since, the range of values variable x can assume can not be predetermined, then we can conclude that the number of times the loop will be executed can't be determined.

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