Easy Ruby ChallengesIntroductory challenges and solutions
Palindrome
For this challenge you will determine if a string is written the same way forward and backwards.
22322 solutions
Solution
Array Addition I
For this challenge you will determine if numbers in an array can add up to a certain number in the array.
10681 solutions
Solution
Letter Count I
For this challenge you will determine which word has the greatest number of repeated letters.
9507 solutions
Solution
Second GreatLow
For this challenge you will determine the second lowest and greatest numbers in an array.
15463 solutions
Solution
Division Stringified
For this challenge you will divide two numbers and return them in a certain format.
11100 solutions
Solution
Counting Minutes I
For this challenge you will return the total number of minutes between two times.
6681 solutions
Solution
Dash Insert
For this challenge you will be manipulating a string using dashes (-).
10026 solutions
Solution
Number Addition
For this challenge you will traverse a string searching for all the numbers and then you will add them up.
9119 solutions
Solution
Third Greatest
For this challenge you will determine the third largest string within an array.
9038 solutions
Solution
Powers of Two
For this challenge you will be determining whether or not a number is a power of two.
9695 solutions
Solution
Additive Persistence
For this challenge you will be determining the additive persistence for a given number.
6864 solutions
Solution
Multiplicative Persistence
For this challenge you will be determining the multiplicative persistence for a given number.
5414 solutions
Solution
Off Line Minimum
For this challenge you will be creating a subset of an array.
7242 solutions
Solution
Changing Sequence
For this challenge you will determine when an array changes sequences.
4263 solutions
Solution
Overlapping Ranges
For this practice test you will determine the intersection between two sets.
3798 solutions
Solution
Superincreasing
For this challenge you will determine if each number is greater than the sum of all previous elements in an array.
3553 solutions
Solution
Hamming Distance
For this challenge you will determine the difference between two strings.
2889 solutions
Solution
Rectangle Area
For this challenge you will determine the area of a rectangle.
3332 solutions
Solution