Coding Challenges and Practice

Question 1

Write a function to reverse a string. What would the function reverseString("CodeSignal") return?

Accepted Answer

langiSedoC

Answer

CodeSignal

Answer

SignalCode

Answer

lanigSedoC

Question 2

Given an array of numbers from 1 to 5, but one number is missing. Which function call will find the missing number from [1, 2, 4, 5]?

Accepted Answer

missingNumber([1, 2, 4, 5]) → 3

Answer

missingNumber([1, 2, 4, 5]) → 6

Answer

missingNumber([1, 2, 4, 5]) → 0

Answer

missingNumber([1, 2, 4, 5]) → 1

Question 3

Which input for the function isPalindrome returns True?

Accepted Answer

isPalindrome("level")

Answer

isPalindrome("CodeSignal")

Answer

isPalindrome("coding")

Answer

isPalindrome("12345")

Question 4

How many vowels are in the string "CodeSignal"?

Accepted Answer

3

Answer

2

Answer

4

Answer

5

Question 5

Sum of Array Elements

Accepted Answer

17

Answer

15

Answer

16

Answer

18