String Problems

Common interview patterns:

Character frequency
Palindrome
Anagram
Substring
Two pointers
Sliding window
Parsing

Anagram

listen
silent

দুই string-এর character counts same।

Python:

from collections import Counter

def is_anagram(a, b):
    return Counter(a) == Counter(b)

Without Counter

Hash map দিয়ে count করা যায়।

Interview-এ interviewer built-in avoid করতে বললে manual solution explain করতে পারবেন।