Help needed with code

Question

I am struggling with a Java coding problem.

How can I write an application that allows a user to enter any number of student quiz scores, as integers, until the user enters 99. If the score entered is less than 0 or more than 10, display Score must be between 10 and 0 and do not use the score. After all the scores have been entered, display the number of valid scores entered, the highest score, the lowest score, and the arithmetic average. We can't use array/array list in the code.

Any help is appreciated!

Answer 1

Here is possible pseudocode.

int score; // value of input

int n = 0; // number of valid scores

double avg = 0; // running average of all valid scores

int highest = -1; // initialy something smaller than any valid score

int lowest = 11; // initialy something bigger than any valid score

while {

read in score;

if (score == 99) break

if (score < 0 || score > 10) {

print a message that the score is invalid

continue

}

if (highest < score) highest = score

if (lowest > score) lowest = score

// update the running average and the count of valid scores

double sum = n*avg + score // sum of all previous valid scores

// plus this new one

n = n+1 // update the count of valid scores

avg = sum/n // new running average

}

// Print final result

print n

if (n == 0) print that no valid scores entered

else print highest, lowest, avg