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Predefined function reverse() in C++ is available under which header file?

(a) math

(b) stdio

(c) stdlib

(d) algorithm

This intriguing question comes from Arrays Types topic in chapter Arrays Types of Data Structures & Algorithms I

The question was posed to me by my school principal while I was bunking the class.

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Right answer is (d) algorithm

Explanation: The predefined function for reversing an array is reverse() in C++ which comes under the library called an algorithm. It requires 2 arguments the first being the pointer to the starting index of the array and the second being the pointer to the last index of the array.

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