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Recursion is a way of programming or coding a problem, in which a function calls itself one or more times in its body. Usually, it is returning the return value of this function call. If a function definition fulfils the condition of recursion, we call this function a recursive function.
1 A second prototypical example of a static method that takes an array as argument is one that randomly shuffles the values in the array, using this version of the approach that we examined in Section 1.4 (simplified by use of the. 2  method just defined). 3  Program Shuffle.java takes this approach. 4  Arrays as return values.