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The results of a quiz on csis 110 lecture 15, focusing on statistics related to the quiz and a discussion on java loops and iteration. Topics include understanding the mean, standard deviation, median, and distribution of quiz scores, as well as examples of while loops and their memory usage. The document also covers infinite loops and shorthand operators in java.
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Quiz Results Statistics Possible: 25 Mean: 16. Std dev: 4. Median: 18 Max: 23 Distribution: <=15: 3, 15 to 19: 6, 20+: 4 Let's look at examples from the last lab Chapter 6: Iteration Last time we looked at the while statement. while (
System.out.println( sum ); NOTE: When might you want a loop to run "forever"? Beware of the same types of errors that occur with if statements: don't put a ; after the boolean expression. Don't forget the {} *Operators +=, -=, =, /=, %= In our programs, we frequently use a variable, add a value to it, and assign the result back into the original variable: valueSum = valueSum + value; money = money * (1 + interest); This is a very common type of expression, so Java provides a shorthand operator for us valueSum += value; money = 1 + interest; // Also /=, -=, %= String s = ""; int j = 0; while ( j < 20 ) { s += ""; j++; } Lab Exercise In genetics, DNA is represented using the symbols A, G, T, and C. Develop a program that asks the user to enter a DNA sequence. Your program should display one of two messages: "That String represents a DNA sequence" "That is not a DNA sequence. The character at position