# Time execution

#1

for a time limit of 1 sec ,what is the maximum number of loops that i can expect to have in a
program (neglecting the effect of fast input/output)?

#2

It depends on the time complexity of the algorithm you are using. Mostly prefer the algorithm/program whose time complexity comes to O(n). Sometime algo with complexity O(n^2) can also be accepted. Basically it depends on the size of input you need to process.

#3

You can have one loop or 100 loops. It doesnt matter. The only thing you need to know is that the number of computations in a second is roughly 10^8 to 10^9. So if a single loop runs upto say 100 , you can have 4 such loops.

#4

@pranay2063 No. of computations is nothing but the no. of times your statement (basic operation) in the innermost loop executes.
For example:

for(i=0;i<100;i++)
{
for(j=0;j<100;j++)
{
for(k=0;k<100;k++)
{
basic-operation;
}
}
}

In this the no. of computation comes to 10^6.

#5

what does this term ‘computation’ exactly mean? is number of computations and number of loops being executed in a program ,mean the
same thing?