fix syntax of Sorting

This commit is contained in:
Doppon 2020-05-14 11:15:53 +09:00
parent b23765e4c8
commit c7177045c8
4 changed files with 35 additions and 36 deletions

View file

@ -1,16 +1,16 @@
class Array
def sorted?
### goes thru array and checks if all elements are in order
for i in 1...self.length
return false if self[i-1] > self[i]
end
def sorted?
### goes thru array and checks if all elements are in order
for i in 1...self.length
return false if self[i-1] > self[i]
end
return true
end
def bogosort
### randomly shuffles until sorted
self.shuffle! until self.sorted?
return self #return sorted array
end
def bogosort
### randomly shuffles until sorted
self.shuffle! until self.sorted?
return self #return sorted array
end
end
puts "Enter a list of numbers seprated by space"

View file

@ -17,6 +17,6 @@ def bubble_sort(array)
end
puts "Enter a list of numbers seprated by space"
list = gets
list = gets
bubble_sort(list)
print list

View file

@ -2,32 +2,31 @@
Algorithm: Heap-Sort
Time-Complexity: O(nlogn)
"""
def heap_sort(array)
array_size = array.size
adjusted_array = [nil] + array
(array_size / 2).downto(1) do |i|
adjusted_down(adjusted_array, i, array_size)
end
while array_size > 1
adjusted_array[1], adjusted_array[array_size] = adjusted_array[array_size], adjusted_array[1]
array_size -= 1
adjusted_down(adjusted_array, 1, array_size)
end
adjusted_array.drop(1)
end
def heap_sort(array)
array_size = array.size
adjusted_array = [nil] + array
(array_size / 2).downto(1) do |i|
adjusted_down(adjusted_array, i, array_size)
end
while array_size > 1
adjusted_array[1], adjusted_array[array_size] = adjusted_array[array_size], adjusted_array[1]
array_size -= 1
adjusted_down(adjusted_array, 1, array_size)
end
adjusted_array.drop(1)
end
#Method to adjust heap in downward manner
def adjusted_down(adjusted_array, parent, limit)
top = adjusted_array[parent]
while (child = 2 * parent) <= limit
child += 1 if child < limit and adjusted_array[child] < adjusted_array[child + 1]
break if top >= adjusted_array[child]
adjusted_array[parent] = adjusted_array[child]
parent = child
end
adjusted_array[parent] = top
end
def adjusted_down(adjusted_array, parent, limit)
top = adjusted_array[parent]
while (child = 2 * parent) <= limit
child += 1 if child < limit and adjusted_array[child] < adjusted_array[child + 1]
break if top >= adjusted_array[child]
adjusted_array[parent] = adjusted_array[child]
parent = child
end
adjusted_array[parent] = top
end
#Code for testing heapsort
array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15].shuffle

View file

@ -12,6 +12,6 @@ def insertion_sort(array)
end
puts "Enter a list of numbers seprated by space"
list = gets
list = gets
insertion_sort(list)
print list