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Answer the following statement true (T) or false (F)
False
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To implicitly overload the += operator:
a. Only the + operator needs to be overloaded. b. Only the = operator needs to be overloaded. c. Both the + and = operators need to be overloaded. d. The += operator cannot be overloaded implicitly.
Answer the following statements true (T) or false (F)
1) The CompareTo method returns a positive number if the invoking string is less than the argument, a negative number if the invoking string is greater and a 0 if they are the same. 2) The StartsWith and EndsWith methods see if a string starts or ends with the given character or string. 3) The IndexOf method returns the indices of all occurrences of the given string. 4) Method LastIndexOf is used to find the last occurrence of given text in a string. 5) The LastIndexOfAny method scans through the array of characters backwards.
What is the right code for String remove() operation? Such an operation removes and returns an element from the queue.
A queue based on a linked list uses the following code ``` class Node { String element; Node next; Node (String el, Node n) { element = el; next = n; } } Node front = null, rear = null; ``` A) ``` if (rear== null) throw new RuntimeException("Empty"); String temp = rear.element; rear = rear.next; if (front == null) rear = null; return temp; B) ``` if (front == rear) throw new RuntimeException("Empty"); String temp = front.element; front = front.next; if (front == null) rear = null; return temp; C) ``` if (front == null) throw new RuntimeException("Empty"); String temp = front.element; front = front.next; if (front == null) front = rear; return temp; ``` D) ``` if (front == null) throw new RuntimeException("Empty"); String temp = front.element; front = front.next; if (front == null) rear = null; return temp; ```
You can modify a symbol by placing it in ____________________ mode.
Fill in the blank(s) with the appropriate word(s).