Kelsey McAlpine - Whiteboard Practice Solutions

README.md

@@ -32,6 +32,16 @@ Then the call of `print(list)` should produce the following output:
 
 Your method should produce a single line of output (may wrap with long lists).
 
+```
+def print_array(array)
+  raise ArgumentError.new("You must input an array") if array.class != Array
+  print array[0..-1]
+end
+
+list = [3, 19, 27, 4, 98, 304, -9, 72]
+print_array(list)
+```
+
 ## Problem #2
 Write a method named `stretch` that accepts an array of integers as a
 parameter and returns a **new** array twice as large as the original, where
@@ -49,6 +59,36 @@ is stretched into the pair 9, 9, the number 7 is stretched into 4, 3,
 the number 4 is stretched into 2, 2, the number 24 is stretched into 12,
 12 and the number 11 is stretched into 6, 5.)
 
+```
+def stretch(array)
+  raise ArgumentError.new("You must input an array") if array.class != Array
+
+  index = 0
+  repeat = array.length
+  new_array = []
+
+  repeat.times do
+    if array[index] == 0
+      new_num1 = 0
+      new_num2 = 0
+    elsif array[index] % 2 == 0
+      new_num1 = array[index] / 2
+      new_num2 = new_num1
+    else
+      new_num1 = array[index] / 2
+      new_num2 = new_num1 + 1
+    end
+
+    new_array << new_num1
+    new_array << new_num2
+
+    index += 1
+  end
+
+  print new_array
+end
+```
+
 ## Problem #3
 Write a method named `numUnique` that accepts a sorted array of integers
 as a parameter and **utilizes a hash to** calculate and return the number of