How to sort two arrays with Java

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Suppose you have number,group, two arrays whose elements are numbers, and now the rules to sort them are as follows:

1. If the element in group exists in numbers,

two。 To put the numbers that appear in group before those in number, pay attention to sorting

Numbers = [8, 3, 1, 2, 5, 4, 4, 7] group = {2, 3, 3, 5, 5, 7}

After analysis, it should be a matter of priority, and the method of tuple sorting is used here:

Numbers = [8, 3, 1, 2, 5 Magazine 4 7 Magazine 6] group = {2 Magne3 Magazine 5 7} tmp = [] for x in numbers: if x in group: tmp.append ((0, x)) else: tmp.append ((1, x)) tmp.sort () print (list (map (lambda XRX [1], tmp)

I saw a classic code on the Internet:

Def sort_priority (values,group): def helper (x): if x in group: return (0, x) return (1, x) values.sort (key=helper) numbers = [8,3,1,2,5 sort_priority (numbers, group) print (numbers)

Recommend the method of using the second higher order function

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