//Write a program to create a substring of given string with start index and last index by using the following method of java.lang.String class. public java.lang.String substring(int, int ...

Sometimes we need to generate a unique number for an emailid, for example when a user register then we need to generate a number by using that user can verify his emailid. for this we can use sha1 ...

Empower your JavaBeans to handle data conversion to and from their XML document format without complicating the code. This tip shows you how to write and use a component to convert a JavaBean to ...

LeetCode各题解法分析~（Java and Python）. Contribute to vaquarkhan/LeetCode-solutions development by creating an account on GitHub.