拆分数组，其中先前值大于当前值

Question

我需要拆分此数组：

arr = [3, 4, 5, 6, 3, 4, 5, 2, 3]

其中前一个元素大于当前元素。结果应该是另一个数组：

[[3, 4, 5, 6], [3, 4, 5], [2, 3]]

Answer 1

arr.slice_when(&:>).to_a
# => [[3, 4, 5, 6], [3, 4, 5], [2, 3]]

Answer 2

def spliter array
  splited_array = []
  temp = []
  last = array[0]
  array.each do |element|
    if element >= last
      temp << element
    else
      splited_array << temp
      temp = [element]
    end
    last = element
  end
  splited_array << temp
end

Answer 3

递归示例。

// in data grid class
protected override DependencyObject GetContainerForItemOverride()
{
  return new MatrixRow();
}

class MatrixRow : DataGridRow
{       
  public MatrixRow()
  {
    var cellPresenterProperty = GetType().GetProperty("CellsPresenter", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.GetProperty);
    cellPresenterProperty.SetValue(this, new MatrixCellPresenter());
  }
}

class MatrixCellPresenter : DataGridCellsPresenter
{
  protected override DependencyObject GetContainerForItemOverride()
  {
    // won't get called, the presenter is overriden by the internal one
    return new MatrixCell();
  }
}