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Computer Sorting Algorithms Difficulty: Medium

What does the term "InputFormat" represent in the context of a MapReduce job? Which of the following is the correct way to perform string concatenation in C#? In Java, how can you check if a file or directory exists using the `File` class? What is the output of given code? string="I'am Learning RUBY Language".downcase string.upcase An application that executes on separate PCs like this is called a(n) __________ application.