Find the each word length in an string and combine them

Problem to find the each word length in an string and combine them.

Example-1:

Input    : s = "welcome to crazy"
Output   : 725

Example-2:

Input    : s = "my crazy coding" 
Output   : 256

Solution

n = "welcome to crazy"

n = n.split()

d = ""

for i in range(len(n)):

    d += str(len(n[i]))

print(d)

Output