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Program to find second largest digit in a string using Python
Suppose we have an alphanumeric string s, we have to find the second largest numerical digit that appears in s, if there is no such string then return -1.
So, if the input is like s = "p84t3ho1n", then the output will be 4 as the digits are [1,3,4,8], so second largest digit is 4.
To solve this, we will follow these steps −
lst := a new set
for each let in s, do
if let is not alphabetic, then
insert let as integer in lst
if size of lst <= 1, then
return -1
return the second last element after sorting lst
Let us see the following implementation to get better understanding −
Example
def solve(s): lst = set() for let in s: if not let.isalpha(): lst.add(int(let)) if len(lst) <= 1: return -1 return sorted(list(lst))[len(lst) - 2] s = "p84t3ho1n" print(solve(s))
Input
"hello", "hlelo"
Output
True
Updated on 29-May-2021 14:31:05
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