String Slice-athon

This challenge has five miniature exercises to help practice proficiency in string slicing. Check the examples below for a visual indicator of how to slice the strings. Good luck!

Examples

const s = "abcdefghijklmnopqrstuvwxyz"

challenge1(s) ➞ "abcde"
// First 5 characters of the string.

challenge2(s) ➞ "vwxyz"
// Last 5 characters of the string.

challenge3(s) ➞ "zyxwvutsrqponmlkjihgfedcba"
// All characters in the string from back.

challenge4(s) ➞ "fedcba"
// First 6 characters in the string (start with 6th character and go backwards).

challenge5(s) ➞ "tvxz"
// Take last 7 characters and only return odd positioned ones.

Notes

• Check the Tests tab for more examples.
• You may use methods other than slice() as needed to complete some of the challenges.
• All test cases follow the same slicing pattern as the above example.