Tip 1 : Practice a lot from trusted websites
Tip 2 : Self study is best to tackle any critical questions
Tip 1 : It should look good to interviewer
Tip 2 : Skills and projects should be filled nicely
In computer science, a semaphore is a variable or abstract data type used to control access to a common resource by multiple processes and avoid critical section problems in a concurrent system such as a multitasking operating system.
A computer can address more memory than the amount physically installed on the system. This extra memory is actually called virtual memory and it is a section of a hard disk that's set up to emulate the computer's RAM.
As this value might be large, print it modulo 10^9 + 7
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What do you know about our company?
Here's your problem of the day
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Which SQL keyword removes duplicate records from a result set?