Update README with LeetCode Daily Challenge

Author: jeremymanning

README.md

@@ -306,6 +306,7 @@ _**Note:** Our group is currently taking a break from grinding leetcode. The tab
 | April 19, 2025 | [2563](https://leetcode.com/problems/count-the-number-of-fair-pairs/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2563) | 🟡 Medium |
 | April 20, 2025 | [781](https://leetcode.com/problems/rabbits-in-forest/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/781) | 🟡 Medium |
 | April 21, 2025 | [2145](https://leetcode.com/problems/count-the-hidden-sequences/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2145) | 🟡 Medium |
+| April 22, 2025 | [2338](https://leetcode.com/problems/count-the-number-of-ideal-arrays/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2338) | 🔴 Hard |
 
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