Daily Express

LeetCode Daily Problem: Saturday, December 13, 2025

Name: 3606. Coupon Code Validator
Uploaded: 2025-12-13T00:00:00.000Z
Duration: 18 min 1 s
Channel: MIK (codestorywithMIK)
Description: LeetCode Daily Problem for Saturday, December 13, 2025: 3606. Coupon Code Validator (easy). Video solution by codestorywithMIK, with the problem link and code.

Video solution by codestorywithMIK for 3606. Coupon Code Validator.

3606. Coupon Code Validator

EasyArray · Hash Table · String · Sorting · 18:01

LeetCode problem 3606, Coupon Code Validator, was LeetCode's Daily Challenge on Saturday, December 13, 2025. It's rated easy. codestorywithMIK explains the approach step by step in the video above.

Open the lecture LeetCode ↗ MIK's code Watch on YouTube