#### Is the given string a pangram?

This technical problem asks the user to write a Python function to check if a given string is a pangram or not. A pangram is a word or sentence containing every letter of the alphabet at least once. For example, "The quick brown fox jumps over the lazy dog" is a pangram.

#### Problem

```Given a string, write a Python function to check if the string is a pangram or not.
Pangrams are words or sentences containing every letter of the alphabet at least once.
For example: "The quick brown fox jumps over the lazy dog" is a pangram.
Input: "hello world"
Output: False```

#### Solution

This solution is in Python. Our A.I. can create solutions in multiple languages.
by kayakane
```# Solution:

def is_pangram(s):
alphabet = "abcdefghijklmnopqrstuvwxyz"
for char in alphabet:
if char not in s:
return False
return True

# Explanation:

# The solution above is optimal because it uses a for loop to iterate through the alphabet string.
# It then checks if each character in the alphabet string is in the input string.
# If it is not, it returns False.
# If it is, it continues to the next character in the alphabet string.
# If it makes it through the entire alphabet string, it returns True.
# This solution is optimal because it only iterates through the alphabet string once.
# It also only iterates through the input string once.
# This is optimal because it is O(n) time complexity.```

A.I. Evaluation of the Solution

The candidate's solution is correct and demonstrates a level of completeness. The approach is clear and efficient.

Evaluated at: 2022-11-25 02:16:40