AP Computer Science - Easy Starter Questions

AP Computer Science - Easy Starter Questions

Name: ________________ Date: ________________

Question 1: Simple Variable Trace

public static void trace1() {
    int x = 5;
    int y = 3;
    x = x + y;
    y = x - y;
    System.out.println(x + " " + y);
}

What is printed when trace1() is called? ______

Question 2: Basic Loop

public static void trace2() {
    int count = 0;
    for (int i = 1; i <= 5; i++) {
        count = count + i;
    }
    System.out.println(count);
}

What is printed when trace2() is called? ______

Question 3: Simple Conditional

public static void trace3(int n) {
    if (n > 10) {
        n = n * 2;
    } else {
        n = n + 5;
    }
    System.out.println(n);
}

What is printed when trace3(7) is called? ______

Question 4: Loop with Counter

public static void trace4() {
    int x = 10;
    int count = 0;
    while (x > 0) {
        x = x - 3;
        count++;
    }
    System.out.println(count + " " + x);
}

What is printed when trace4() is called? ______

Question 5: Loop with Conditional

public static void trace5(int n) {
    int sum = 0;
    for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) {
            sum = sum + i;
        }
    }
    System.out.println(sum);
}

What is printed when trace5(6) is called? ______

Question 6: While Loop with Update

public static void trace6(int n) {
    int a = 1;
    int b = 0;
    while (a < n) {
        a = a * 2;
        b++;
    }
    System.out.println(a + " " + b);
}

What is printed when trace6(20) is called? ______

Question 7: Nested Conditionals

public static void trace7(int x, int y) {
    int result = 0;
    if (x > 5) {
        if (y < 10) {
            result = x + y;
        } else {
            result = x - y;
        }
    } else {
        result = x * y;
    }
    System.out.println(result);
}

What is printed when trace7(8, 15) is called? ______

Question 8: Loop with Multiple Updates

public static void trace8() {
    int x = 1;
    int y = 10;
    while (x < y) {
        x = x + 2;
        y = y - 1;
    }
    System.out.println(x + " " + y);
}

What is printed when trace8() is called? ______

Question 9: Accumulator Pattern

public static void trace9(int n) {
    int result = 1;
    int count = 0;
    while (result <= n) {
        result = result * 3;
        count++;
    }
    System.out.println(count + " " + result);
}

What is printed when trace9(50) is called? ______

Question 10: Complex Loop Logic

public static void trace10(int n) {
    int a = 0;
    int b = 1;
    for (int i = 0; i < n; i++) {
        int temp = a + b;
        a = b;
        b = temp;
    }
    System.out.println(a);
}

What is printed when trace10(5) is called? ______