30S-Section-Solution

30S-Section-Solution - CS106A Handout 30S th May 11 13th,...

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CS106A Handout 30S Spring 2011 May 11 th – 13 th , 2011 Section Solution Lab Problem 1 Solution: Exam Statistics public class ExamStatistics extends ConsoleProgram { public void run() { setFont("Courier-Bold-18"); int [] histogram = new int [11]; double runningScoreSum = 0.0; for ( int i = 0; i < NUM_STUDENTS ; i++) { String space = (i < 9 ? " " : ""); double score = readDouble("exam " + (i + 1) + ": " + space, 0.0, 100.0); runningScoreSum += score; int bucket = ( int ) (score / 10); histogram[bucket]++; } println(); printMean(runningScoreSum/ NUM_STUDENTS ); printHistogram(histogram); } private void printMean( double mean) { println("mean:"); println(mean); println(); } private void printHistogram( int [] histogram) { println("histogram:"); for ( int bucket = 0; bucket < histogram.length; bucket++) { printLabel(bucket); for ( int i = 0; i < histogram[bucket]; i++) { print("*"); } println(); } } private void printLabel( int bucket) { if (bucket == 0) { print("00-09: "); } else if (bucket == 10) {
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30S-Section-Solution - CS106A Handout 30S th May 11 13th,...

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