class Array

# File lib/nyuudou/extension/array.rb, line 2
def bubble_sort
  ary = self.dup
  (0...(ary.length - 1)).each { |i|
    ((i+1)...(ary.length)).reverse_each { |j|
      ary[j-1], ary[j] = ary[j], ary[j-1] if ary[j-1] > ary[j]
    }
  }
  ary
end

# File lib/nyuudou/extension/array.rb, line 12
def bubble_sort!
  (0...(self.length - 1)).each { |i|
    ((i+1)...(self.length)).reverse_each { |j|
      self[j-1], self[j] = self[j], self[j-1] if self[j-1] > self[j]
    }
  }
  self
end

# File lib/nyuudou/extension/array.rb, line 44
def insertion_sort
  ary = self.dup
  (1...ary.length).each { |i|
    (1..i).reverse_each { |j|
      break if ary[j-1] <= ary[j]
      ary[j-1], ary[j] = ary[j], ary[j-1]
    }
  }
  ary
end

# File lib/nyuudou/extension/array.rb, line 55
def insertion_sort!
  (1...self.length).each { |i|
    (1..i).reverse_each { |j|
      break if self[j-1] <= self[j]
      self[j-1], self[j] = self[j], self[j-1]
    }
  }
  self
end

# File lib/nyuudou/extension/array.rb, line 21
def selection_sort
  ary = self.dup
  (0...(ary.length - 1)).each { |i|
    min = i
    ((i+1)...(ary.length)).each { |j|
      min = j if ary[j] < ary[min]
    }
    ary[i], ary[min] = ary[min], ary[i]
  }
  ary
end

# File lib/nyuudou/extension/array.rb, line 33
def selection_sort!
  (0...(self.length - 1)).each { |i|
    min = i
    ((i+1)...(self.length)).each { |j|
      min = j if self[j] < self[min]
    }
    self[i], self[min] = self[min], self[i]
  }
  self
end