Triple trouble

DESCRIPTION:

Write a function

triple_double(num1, num2)

which takes numbers num1 and num2 and returns 1 if there is a straight triple of a number at any place in num1 and also a straight double of the same number in num2.

If this isn't the case, return 0

Examples

triple_double(451999277, 41177722899) == 1
# num1 has straight triple 999s and num2 has straight double 99s

triple_double(1222345, 12345) == 0
# num1 has straight triple 2s but num2 has only a single 2

triple_double(12345, 12345) == 0

triple_double(666789, 12345667) == 1

---

def fold_array(array, runs):
    for i in range(runs):
        if len(array)==1:
            break
        alist=[]
        ln,rn=0,len(array)-1
        while ln<rn:
            print(ln,rn)
            alist.append(array[ln]+array[rn])
            ln+=1
            rn-=1
            if ln==rn:
                alist.append(array[ln])
        array=alist
    return array