2019 ap computer science free response answers

// Part A public ArrayList<String> getDelimitersList(String[] tokens) { ArrayList<String> out = new ArrayList<>(); for (String t: tokens) { if (t.equals(openDel) || t.equals(closeDel)) out.add(t); } return out; } // Part B public boolean isBalanced(ArrayList<String> delimiters) { int open = 0; int close = 0; for (String d: delimiters) { if (d.equals(openDel)) open++; else if (d.equals(closeDel)) close++; if (close > open) return false; } return open == close; }

// Part A public static int numberOfLeapYears(int year1, int year2) { int cnt = 0; for (int y=year1; y<=year2; y++) { if (isLeapYear(y)) cnt++; } return cnt; } // Part B public static int dayOfWeek(int month, int day, int year) { int firstDay = firstDayOfYear(year); int doy = dayOfYear(month, day, year); return (firstDay + dayOfYear - 1) % 7; }

public class StepTracker { private int days; private int activeDays; private int totalSteps; private int minActive; public StepTracker(int m) { minActive = m; days = 0; activeDays = 0; totalSteps = 0; } public void addDailySteps(int steps) { days++; totalSteps += steps; if (steps >= minActive) { activeDays++; } } public int activeDays() { return activeDays; } public double averageSteps() { if (days == 0) { return 0.0; } return (double)totalSteps / days; } }

// Part A
public LightBoard(int numRows, int numCols) {
	lights = new boolean[numRows][numCols];
	for (int r=0; r<numRows; r++)
		for (int c=0; c<numCols; c++)
			lights[r][c] = Math.random() < 0.4; 
}

// Part B
public boolean evaluateLight(int row, int col) {
	int onInCol = 0;
	for (int r=0; r<lights.length; r++)
		if (lights[r][col])
			onInCol++;
	if (lights[row][col] && onInCol % 2 == 0)
		return false;
	else if (!lights[row][col] && onInCol % 3 == 0)
		return true;
	return lights[row][col];
}

Posted by: Guest on February-02-2021

Source

Code answers related to "2019 ap computer science free response answers"

Code answers related to "Whatever"

Browse Popular Code Answers by Language

Answers for "2019 ap computer science free response answers"

Code answers related to "2019 ap computer science free response answers"

Code answers related to "Whatever"

Browse Popular Code Answers by Language

Popular Programming Languages

Advertisements

Company

Compilers

Help

Connect with us