请问这个怎么实现呀？

Write a program that creates a class named Num to receive a sorted array of numbers without duplicates as an attribute. Create a method sip (search insert position) to receive a target value, the method return the index if the target is found in the array. If not, return the index where it would be if it were inserted in order. The following shows the execution of the function. (Do not use any build-in function.)

x=Num((1,2,5,8,13,19))

print(x.sip(5))

#output

2

----------------------------------------------------------------------------

x=Num((1,2,5,8,13,19))

print(x.sip(15))

#output

5

class Num:
    def __init__(self, li):
        self.list = li
    def sip(self, n):
        index = 0
        for v in self.list:
            if v>=n:
                break
            index += 1
        return index


x=Num((1,2,5,8,13,19))
print(x.sip(5))
x=Num((1,2,5,8,13,19))
print(x.sip(15))

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