How Many Times Will This While Loop Execute?

Computer Science Level 1

How many times will this while loop (in Python) execute?

i = 1
while i % 2 != 0:
    print "We are looping"
    i += 2

0 1 2 Infinite

1 solution

Sam Bealing
Jun 28, 2016

Relevant wiki: While

The condition for the while loop to continue is that $i \not \equiv 0 \pmod{2} \implies i \equiv 1 \pmod{2}$ .

Initialy $i=1$ and each time $i$ is set to $i+2$ this means $i \equiv 1 \pmod{2}$ so the loop will continue $\boxed{\boxed{\text{Infinitely}}}$

Simple standard approach.