Consider a Class That Uses the Following Variables to Implement

question 25

Multiple Choice

Consider a class that uses the following variables to implement an array-based stack:
String [ ] s = new String[100];
Int top = 0;
A method that implements the String pop() operation can be written as

• A) if (top == 0)
• Throw new RuntimeException("Underflow");
• Top--;
• String temp = s[top];
• S[top] = null;
• Return temp;
• B) if (top == 0.
• Throw new RuntimeException("Underflow".;
• String temp = s[top];
• Top--;
• S[top] = null;
• Return temp;
• C) if (top == 0.
• Throw new RuntimeException("Underflow".;
• Return s[top-1];
• Top --;
• S[top] = null;
• D) top--;
• Return s[top];

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