Just finished this, want to share my experience when facing Codility Assessment just able to finish 2/3 question and there are some hidden test case when submit the code...\n\nQ1:\n![image](https://assets.leetcode.com/users/runkat/image_1592146589.png)\n![image](https://assets.leetcode.com/users/runkat/image_1592146696.png)\n\nQ2:\n![image](https://assets.leetcode.com/users/runkat/image_1592146756.png)\n\nQ3:\n![image](https://assets.leetcode.com/users/runkat/image_1592146858.png)\n

Just finished this, want to share my experience when facing Codility Assessment just able to finish 2/3 question and there are some hidden test case when submit