Cycle 1 Java Programming Quiz

What is the result of adding numbers from 1 to 100?

• 5000

• 5050

• 5100

• 4950

What is the formula to calculate the sum of the first N natural numbers?

• N * (N + 1)

• N + (N - 1)

• N * (N + 1) / 2

• N2 + 1

Which loop can be used to perform the addition?

• if

• for

• switch

• try

What data type is suitable for storing the result?

• char

• String

• int

• boolean

What is the time complexity of this approach?

• O(1)

• O(N)

• O(N2)

• O(log N)

What keyword is used to declare a variable in Java?

• define

• var

• int

• let

How many times will the loop run from 1 to 100?

• 99

• 100

• 101

• 50

Which symbol is used for addition in Java?

• -

• =

• +

• *

What will be the output if the loop starts from 0 to 100?

• 5050

• 5000

• 5150

• 4950

Which of these can replace looping to compute the sum more efficiently?

• Recursion

• Inheritance

• Mathematical formula

• Interfaces