Write a program to find next greatest number in  an array| Python

TestCase1:

arr=[1,2,3,4]

Output:

[2,3,4,-1]

TestCase2:

arr=[100,2,4,6,63]

output:

[-1,4,6,63,-1]

"""

Aim:Write a Program to find Next greates integer in a array

"""

arr=[100,24,24,1,5]

max_arr,lst=[],[]

for i in range(0,len(arr)):

    j=arr[i]

    if(i==(len(arr)-1)):

        lst.append(-1)

        break

    else:

        for k in range(i+1,len(arr)):

            if(j<arr[k]):

                max_arr.append(arr[k])

            else:

                max_arr.append(-1)

    lst.append(min(max_arr))

    max_arr=[]

print(lst)

Easy steps to understand the above problem.