IRCTC Booking Code Word Pattern
IRCTC Booking Code Word Pattern
HardHash Maps22% accepted
IRCTC validates booking patterns. Given a pattern string (e.g. 'abba') and space-separated words, check if the words follow the exact same pattern (bijective mapping: one pattern char maps to one unique word and vice versa).
Approach
Check if words follow pattern with a bijective character-to-word mapping.
Input
abba
dog cat cat dog
Output
true
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