list - 如何将元素移动到groovy中列表的第一个位置

Question

如何重新排序列表:

['apple', 'banana', 'orange']

如果用户选择香蕉，列表将变为

['banana', 'apple', 'orange']

Answer 1

另一种方法:

def list = ['apple', 'banana', 'orange']
// get a reference to the selection (banana)
def pick = list.find { it == 'banana' }
// remove selection from the the list
def newList = list.minus(pick)
// add selection back at the beginning
newList.add(0, pick)