If you want to see more algorithm questions, you can scan the QR code above to follow my WeChat official account " Data Structure and Algorithms ". Up to now, I have updated more than 500 algorithm questions in the official account , some of which have been sorted into pdf documents. , As of now, there are more than 800 pages in total (and will continue to increase), you can reply to the keyword "pdf" in the official account to download.
In Android, the letters on the button sometimes become all uppercase , the solution is just one line of code, just add the following attribute.
android:textAllCaps="false"