Android Studio Project: Classic Minesweeper Game

This is a game based on classic Minesweeper but not just that. It's a perfect reproduction of classic Windows Minesweeper game on Android. Have fun!

Click To Download On Amazon Appstore

Project site

Android Studio Project: Classic 2048 Game Updated

The new version of 2048 adds back button to make this game more flexible, and adds exit prompt to prevent muffed exits effectively. In the meantime, the problem of too many cards on some devices has been repaired.

Click To Download On Amazon Appstore

Project site are in my previous post: Android Project: Classic 2048 Game.

Android Learning Note: Being Cautious To Use static Modifier When Defining A Variable

Using static modifier when defining a variable in a class means it's a class variable, which has only 1 identical value in different instance objects.

LeetCode Online Judge-5. Longest Palindromic Substring

Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring.

//Java Program: Longest Palindromic Substring
public class Solution {
    public String longestPalindrome(String s) {
        
        //In this program, there is no empty string acturally.
        if (s.length()==0) {
return null;
}

String result = s.substring(0, 1);

//Axis of symmetry: i/2.0
for(int i=1,j;i<2*s.length()-2&&(s.length()-1-i/2)*2+1>result.length();++i) {
for(j=0;(i-1)/2-j>=0&&i/2+1+j<s.length();++j) {
if (s.charAt((i-1)/2-j)!=s.charAt(i/2+1+j)) {
break;
}
}
String temp = s.substring((i-1)/2-j+1, i/2+1+j);
if (temp.length()>result.length()) {
result = temp;
}
}

return result;

    }

}