Скачать или смотреть JavaScript Challenge Transforming Strings with the Mumbling Kata kyu 7 Codewars Tutorial

Hey there, welcome back! 👋

In today’s Codewars challenge, we are solving the "accum" kata. Here's how it works:

You are given a string, and your task is to transform it so that each letter in the string is repeated a number of times equal to its position in the string. The first letter is capitalized, and the rest are lowercase. Every transformed letter is separated by a hyphen.

Example Breakdown:
For "abcd":

The first letter is "A".
The second letter is "Bb".
The third letter is "Ccc".
The fourth letter is "Dddd".
So, the final result would be "A-Bb-Ccc-Dddd".

For "RqaEzty":

"R-Qq-Aaa-Eeee-Zzzzz-Tttttt-Yyyyyyy".
Let's see how we can write the code to achieve this! 🎯

Step-by-step solution:
First, we split the input string into an array of individual characters using .split('').
Next, we use .map() to go through each character. We transform the character by:
Capitalizing the first letter.
Repeating the letter based on its position (index) in the array using .repeat(index).
Finally, we join the transformed characters with hyphens using .join('-').
And that’s it! It’s an elegant and concise way to solve the problem.

Here's how the code looks:

```
function accum(s) {
return s
.split('') // Split the string into an array of characters
.map((char, index) return char.toUpperCase() + char.toLowerCase().repeat(index)) // Capitalize the first letter and repeat the rest based on position
.join('-'); // Join the resulting array with hyphens
}
```

Feel free to try this out yourself! See you in the next challenge! 😊

code resource : https://github.com/fadeomar/cubes/tree/mai...

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