How to Solve Programming Problems - Simple Programmer

 

solve programming problems

99 Lisp Problems, 99 Haskell Problems. Most of these can also be done in other languages. Rosetta Code Programming Tasks. These come with solutions in many languages! Code Golf Challenges. The goal here is to solve the problem with as few characters as possible. SPOJ Problems. This is a list of more than Problems! Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems. Jan 08,  · How to Solve Programming Problems. Right before the holidays, I said that you had better learn how to solve programming problems.. This time I am going to try and give you some good tools to enable you to get good at solving programming problems.


How to solve a Dynamic Programming Problem ? - GeeksforGeeks


Some of the feedback I hear from new developers working solve programming problems a programming problem revolves around uncertainty of where to start.

You understand the problem, the logic, basics of the syntax, etc. But maybe you feel uncertain about doing it yourself and have trouble turning your thoughts into code at first even though you understand the syntax or logic. There is solve programming problems difference between the problem and the problem you think you are solving. Taking extra time in the beginning is worth it.

The better you understand the problem, the easier it will be to solve it. If there are no even numbers, return the empty array evenNumbers. Here are some questions that run through my mind:. Take out a piece of paper and work through the problem manually. Think of at least three sets of sample data you can use. Consider corner and edge cases as well. Corner case : a problem or situation that occurs outside of normal operating parameters, specifically when multiple environmental variables or conditions are simultaneously at solve programming problems levels, even though each parameter is within the specified range for that parameter.

Edge case : problem or situation that occurs only at an extreme maximum or minimum operating parameter. For example, below are some sets of sample data to use:. When you are first starting out, it is easy to gloss over the steps. Because your brain may already be familiar with even numbers, you may just look at a sample set of data and pull out numbers like 2solve programming problems6 and so forth in the array without fully being aware of each and every step your brain is taking to solve it.

That helps you work through the real algorithm. I go through this a few more times. Notice how the steps I wrote down for [1] varies slightly from [1, 2]. That is why I try to go through a couple of different sets. I have some sets with just one element, solve programming problems, some with floats instead of just integers, some with multiple digits in an element, and some with negatives just to be safe.

See if you can reduce any steps or if you are repeating any steps. This approach may remind you of Mathematical Induction in that you:, solve programming problems. Write pseudocode line solve programming problems line. You can do this either on paper or as comments in your code editor.

Pseudocode generally does not actually have specific rules in particular but sometimes, I might end up including some syntax from a language just because I am familiar enough with an solve programming problems of the programming language.

Focus on the logic and steps. For our problem, there are many different ways to do this. For example, you can use filter but for the sake of keeping this example as easy to follow along as possible, we solve programming problems use a basic for loop for now but we will use filter later when we refactor our code. Here is an example of pseudocode that has more words:.

Here is an example of pseudocode that has fewer words:. Either way is fine as long as you are solve programming problems it out line-by-line and understand the logic on each line. Refer back to the problem to make sure you are on track. When you have your pseudocode ready, translate each line into real code in the language you are working on. We will use JavaScript for this example, solve programming problems. If you wrote it out on paper, solve programming problems, type this up as comments in your code editor.

Then replace each line in your pseudocode. Then I call the function and give it some sample sets of data we used earlier. I use them to see if my code returns the results I want. You can also write tests to check if the actual output is equal to the expected output.

I generally use console. This helps me check if the values and code are behaving as expected before I move on. By doing this, solve programming problems, I catch any issues before I get too far.

Below is an example of what values I would check when I am first starting out. I do this throughout my code as I type it out. After working though each line of my pseudocode, below is what we end up with.

Text that is bolded is the actual code in JavaScript. I get rid of the pseudocode to avoid confusion. Sometimes new developers will get hung up with the syntax that it becomes difficult to move forward. Remember that syntax will come more naturally over time and there is no shame in referencing material for the correct syntax later on when coding, solve programming problems. Dijkstra, Dutch computer scientist and early pioneer in many research areas of computing science.

In this example, solve programming problems way of optimizing it would be to filter out items from an array by returning a new array using filter.

This will not change the original array. Simplifying and optimizing your code may require you to iterate a few times, identifying ways to further simplify and optimize code. Here are some questions to keep in mind:. This step really should be throughout the process. Debugging throughout will help you catch any syntax errors or gaps in logic sooner rather than solve programming problems. When I encounter bugs, I trace the code line-by-line to see if there was anything that did not go as expected.

Here are some techniques I use:. You may not always remember what every single line meant a month later. And someone else working on your code may not know either. Stay away from comments such as:. Iterate through it. This comes in handy when I am working on more complex problems. It helps understand what a particular function is doing and why.

Through the use of clear variable names, function names, and comments, you and others should be able to understand:. Get feedback from your teammates, professors, and other developers. Check out Stack Overflow. See how others tackled the problem and learn from them. There are sometimes several ways to solve programming problems a problem. Even experienced developers are always practicing and learning. If solve programming problems get helpful feedback, implement it.

Redo a problem or do similar problems. Keep pushing yourself. With each problem you solve, the better a developer you become. Remember that programming, like with anything, comes easier and more naturally with time, solve programming problems. Have faith in how far you can go.

Thanks Gavin Stark. Sign in. Get started. Tips for new developers staring at a blank screen, unsure of where to start. Valinda Chan Follow. Web Development articles, tutorials, and news. Bursts of code to power through your day. See responses Discover Medium, solve programming problems.

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About - Project Euler

 

solve programming problems

 

Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems. 99 Lisp Problems, 99 Haskell Problems. Most of these can also be done in other languages. Rosetta Code Programming Tasks. These come with solutions in many languages! Code Golf Challenges. The goal here is to solve the problem with as few characters as possible. SPOJ Problems. This is a list of more than Problems! Join over 5 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews.