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C++ Algorithm replace()C++ Algorithm replace() function is used to replace all value equal to old_value by the value new_value in the range [first, last). This function examines each element in the range and replaces it if it matches a specified value. Syntaxtemplate <class ForwardIterator, class T> void replace (ForwardIterator first, ForwardIterator last, const T& old_value, const T& new_value); Parameterfirst: A forward iterator pointing to the initial position in the range from which elements are being replaced. last: A forward iterator pointing to the final position in the range from which elements are being replaced. old_value: The old value of the elements to be replaced. new_value: The new value being assigned to the elements with the old value. Return valueNone |