Write a Java class that extends the Progression class so that each value in the progression is…

Write a Java class that extends the Progression class so that each value in the progression is the absolute value of the difference between the previous two values. You should include a default constructor that starts with 2 and 200 as the first two values and a parametric constructor that starts with a specified pair … Continue reading "Write a Java class that extends the Progression class so that each value in the progression is…"

Al and Bob are arguing about their algorithms. Al claims his O(nlogn)-time method is always…

Al and Bob are arguing about their algorithms. Al claims his O(nlogn)-time method is always faster than Bob’s O(n2)-time method. To settle the issue, they perform a set of experiments. To Al’s dismay, they find that if n 2)-time algorithm runs faster, and only when n ≥ 100 is the O(nlogn)-time one better. Explain how … Continue reading "Al and Bob are arguing about their algorithms. Al claims his O(nlogn)-time method is always…"

Suppose Alice has picked three distinct integers and placed them into a stack S in random order….

Suppose Alice has picked three distinct integers and placed them into a stack S in random order. Write a short, straightline piece of pseudocode (with no loops or recursion) that uses only one comparison and only one variable x, yet that results in variable x storing the largest of Alice’s three integers with probability 2/3. … Continue reading "Suppose Alice has picked three distinct integers and placed them into a stack S in random order…."

Suppose Alice has picked three distinct integers and placed them into a stack S in random order….

Suppose Alice has picked three distinct integers and placed them into a stack S in random order. Write a short, straightline piece of pseudocode (with no loops or recursion) that uses only one comparison and only one variable x, yet that results in variable x storing the largest of Alice’s three integers with probability 2/3. … Continue reading "Suppose Alice has picked three distinct integers and placed them into a stack S in random order…."

Postfix notation is an unambiguous way of writing an arithmetic expression without parentheses….

Postfix notation is an unambiguous way of writing an arithmetic expression without parentheses. It is defined so that if “(exp1)op(exp2)” is a normal fully parenthesized expression whose operation is op, the postfix version of this is “pexp1 pexp2 op”, where pexp1 is the postfix version of exp1 and pexp2 is the postfix version of exp2. … Continue reading "Postfix notation is an unambiguous way of writing an arithmetic expression without parentheses…."