LeetCode problems #2356 (MySQL), #939 (Ruby), #2567 (Ruby), #1217 (Ruby)

Finally, I was able to solve 939. Minimum Area Rectangle – https://leetcode.com/problems/minimum-area-rectangle/

Also in this video I demonstrate the best ways to solve LeetCode problems:
2356. Number of Unique Subjects Taught by Each Teacher – https://leetcode.com/problems/number-of-unique-subjects-taught-by-each-teacher/

And of course, I continued working on the following problems, but still wasn’t successful:
2567. Minimum Score by Changing Two Elements – https://leetcode.com/problems/minimum-score-by-changing-two-elements/

Also, I attempted the following problems and successfully solved them, but, as usual, I’ll present my thoughts on best approaches for these problems tomorrow:
1217. Minimum Cost to Move Chips to The Same Position – https://leetcode.com/problems/minimum-cost-to-move-chips-to-the-same-position/

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