Each day I solve several coding challenges and puzzles from Codr's ranked mode. The goal is to reach genius rank, along the way I explain how I solve them. You do not need any programming background to get started, and you will learn a ton of new and interesting things as you go.
From "smart" rank and up we will encounter problems which we actually have to fully analyze and solve, not just fixing a few bugs.
The code above starts with creating an array of numbers, then it declares two variables R=0 and T=2. Further, we have a for-loop with a conditional R++ operation, this executes only if el is equal to T. Due to the simplicity of the code, we can summarize the algorithm as such: the code is counting (using R) the number of occurrences of number T in the array.
Since T=2, we see that 2 appears only once in the array, so R should be 1:
If you feel inspired and motivated to upgrade your coding + debugging skills, join me on the Road to Genius at https://nevolin.be/codr/
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