dstavis

#Write a method valid_triangle? which takes as its input three non-negative numbers.
def valid_triangle?(a, b, c)
  
  #if the three numbers could form the side lengths of a triangle
  if a**2 + b**2 == c**2
  #It should return true
    return true
  #and false otherwise.
    else 
    return false

dstavis

def median(array)

array.sort!
#if total number of items in the array is odd,
if array.length % 3 == 0
  #Figure out the index of the middle item. Which is one greater than half the length rounded down.
  middle_index = array.length / 2 + 1
  middle_index = middle_index.to_int
  #return the item at that index
  median = array[middle_index]

dstavis

Write a method mode which takes an Array of numbers as its input and returns an Array of the most frequent values.

If there's only one most-frequent value, it returns a single-element Array.

For example,

mode([1,2,3,3])         # => [3]
mode([4.5, 0, 0])       # => [0]
mode([1.5, -1, 1, 1.5]) # => [1.5]
mode([1,1,2,2])         # => [1,2]