How to find second largest number in a list?

Question

So I have to find the second largest number from list. I am doing it through simple loops.

My approach is to divide a list into two parts and then find the largest n

Answer 1

alist=[10, 0,3,10,90,5,-2,4,18,45,707, 100,1,-266,706, 1]
print(max(alist))
second_largest=alist[0]
for i in range(len(alist)):
    if (alist[i]>second_largest and alist[i]!=max(alist)):
        second_largest=alist[i]
print(second_largest)