Whether you’re a fresh graduate, or an experienced engineer looking for a job change, there’s no doubt that you have to face some tough technical interview questions during the interview process. These questions are common across all industries and companies—from small start-ups to large corporations. But don’t worry! We’ve compiled the best programming interview questions and answers in this blog post so that you can breeze through your next technical job interview with ease.

How many golf balls could fit in a school bus?

This is a classic programming interview question that can be solved using simple mathematical concepts. First, you need to find out how many golf balls will fit in a school bus. The answer depends on the size of the bus and how tightly packed those golf balls are. You can use a method called “packing” to calculate this number of golf balls.

Next, you need to find out how many school buses it would take for all of these golf balls — plus one more — to fit inside them. You’ll also need some additional information: How much does each school bus weigh? What is its volume? Once again, we use packing methods here because they’re easy-to-implement solutions with high accuracy rates (and fun!).

Given a number, reverse it.

For example, if you were given 123456789 and asked to reverse it, your answer would be 987654321. This is a simple problem that can be solved using recursion:

• Given an integer n, we want to find out what its negative counterpart looks like (i.e., -n). The first step is figuring out how many zeros are at the end of this number by checking whether there are more than two digits after the decimal point (if yes), then subtracting one from their total number until you have all single digits remaining; otherwise just leave them as they are and move onto step 2 below:
• Once we know how many zeroes there are after our original number’s decimal point(s), we can use those values along with whatever else was left behind during Step 1 above as input parameters into our recursive function call which will return both positive & negative versions simultaneously

Write an algorithm for finding all prime numbers less than or equal to n.

The Sieve of Eratosthenes is a simple and efficient algorithm for finding all prime numbers less than or equal to n. The algorithm works by eliminating all multiples of 2, 3, 5, 7 and so on from the range 2^n – 1 down to 1 (where n is the upper limit).

The recursive solution has two parts:

• First we call the function on n-1 elements and store those results in an array. We then pass that array into our recursive call along with an additional element whose value will be used later on in our second step. When this second step completes we have now eliminated all multiples of 2 through 9 from our list of possible primes! We now need only check whether each remaining candidate number is divisible by any other prime factors besides itself before adding it back into our final set of candidates for being prime numbers themselves!

Reverse a linked list without using recursion.

The question is about reverse a linked list without using recursion.

The solution is to use a stack or queue.

A square has sides of length 1 unit and is surrounded by concentric circles of radius 1 unit. What is the minimum area of land needed to surround it?

The area of a square is 4*pi*1^2, and the area of each circle is pi*r^2. Thus, we can say that:

Area = sum(Pi * r^2)

We want to know what number to add up in order to find out how much land we need to surround our square? Well, this depends on what kind of shape you want around your square! If we want circles (like I do), then we need all kinds of different radii–and luckily for us there are infinitely many choices here! We could have chosen any number between 0 and infinity…but let’s go ahead and use 1 as our smallest radius value since it makes sense from both perspectives: not only does it make sense mathematically (with respect), but also visually if someone were looking at this problem from above ground level where everything looks flat enough already…

Given a number, find its square root using only multiplication and addition.

A simple way to calculate a square root is by using the formula sqrt(x) = (x+x/2) / 2. For example, if you want to find the square root of 12:

sqrt(12) = (12+6)/2 = 7

Write an algorithm that takes as input a string containing lowercase alphabets and returns another string containing the same letters but with uppercase first character.

The solution is quite simple and can be done in many ways:

• Use a Stack: You can use a stack to store all your characters and then pop them off one by one. Since we want to convert each character into uppercase, we just need to put it at the top of our list using “push()” method. After we have popped all characters off this list, we will end up getting our desired output!

These questions are asked at every technical interview process.

These are some of the most common interview questions asked at technical interviews. You can find more of these questions on the internet, but make sure to practice answering them before your next technical interview.

We hope you enjoyed this list of programming interview questions. We know that they can be difficult to answer, but we also believe that with the right preparation and approach, you’ll be able to tackle them with confidence!