new tasks

Task/Arrays/Ruby/arrays.rb

@@ -0,0 +1,20 @@
+# create an array with one object in it
+a = ['foo']
+
+# the Array#new method allows several additional ways to create arrays
+
+# push objects into the array
+a << 1         # ["foo", 1]
+a.push(3,4,5)  # ["foo", 1, 3, 4, 5]
+
+# set the value at a specific index in the array
+a[0] = 2       # [2, 1, 3, 4, 5]
+
+# a couple of ways to set a slice of the array
+a[0,3] = 'bar'    # ["bar", 4, 5]
+a[1..-1] = 'baz'  # ["bar", "baz"]
+a[0] = nil        # [nil, "baz"]
+a[0,1] = nil      # ["baz"]
+
+# retrieve an element
+puts a[0]