Validate Border Checkpoint Passport IDs
Validate Border Checkpoint Passport IDs
EasyStrings100% accepted
At the India-Bangladesh border checkpost in Kolkata, Meera processes daily passenger records. She needs to validate passport IDs which follow a strict format: 2 uppercase letters followed by 4 digits (e.g., AB1234).
Approach
Given a text string, extract all valid passport IDs matching format: 2 letters + 4 digits.
Input
AB1234 CD5678
Output
AB1234 CD5678
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