1. Write an algorithm to reverse a string.

   1. Assumptions

      1. You cannot use any library functions.

      2. You may use charAt (if needed.)

2. Write an algorithm to find out if a string has all unique characters.

   1. Assumptions

      1. You cannot use additional data structures.

   2. References

A block is a group of zero or more statements between balanced braces ('{' and '}') and can be used anywhere a single statement is allowed inside a class, and this includes inside the class outside all methods and within methods. A method can also be considered as a block with a name.

A programmer create software through a process called programming or coding. The purpose of programming is to develop an executable computer program that will automate performing a specific task or solving a given problem.

Programming involves activities such as analysis, design, generating algorithms and implementation of algorithms in a target programming language. These activities are also called as Software Development Lyfecycle (SDLC).

1. A compiler is a computer program that transforms source code written in a programming language into another computer language, often in a binary form, that is understood by the computer platform.

2. A compiler usually transforms a high-level programming language to machine code specific to a platform, so that it can then be directly executed in that platform.

1. The purpose of programming is to develop an executable computer program that will automate performing a specific task or solving a given problem.

2. Programming involves activities such as analysis, design, generating algorithms and implementation of algorithms in a target programming language.

3. The process of programming often requires expertise in many different areas, like the application domain knowledge, specialized algorithms etc.