Download Counting Iterations Worksheet - Again answers

Name __________________
Counting Iterations
How many times does action() execute in the following segments of code?
1)
for (int m = 0; m < 29; m++)
action();
29
2)
for (int k = 1; k <= 12; k++)
action();
action();
6)
for (int t = 0; t < 3; t++)
for (int j = t; j <= 9; j++)
action();
j=0..9, j=1..9, j=2..9,
10+9+8=27
7)
12+1=13
3)
int f;
for (f = 1; f <= 21; f++)
action();
21
for (f = 0; f < 5; f++)
action();
5
39
8)
21+5=26
4)
for (int n = 0; n <= 8; n++)
action();
9
for (int h = 1; h < 9; h++)
action();
8
for (int c = 0; c < 4; c++)
{
action();
4
for (int w = 1; w < 5; w++)
action();
4 * 4 = 16
}
for (int y =
action();
for (int u =
action();
for (int g =
action();
1; y < 15; y+=2)
1,3,5…13 = 7
1; u < 7; u+=3)
1,4 = 2
0; g < 40; g+=5)
0,5,10…35 = 8
7+2+8=17
9)
9+8=17
5)
for (int b = 1; b <= 6; b++) {
action();
for (int z = b; z < 9; z++)
action();
}
for (int d =
action();
for (int s =
for (int k
action();
0; d <= 14; d+=2)
0,2,4,…12,14 = 8
1; s < 16; s+=3)
= s; k < 8; k++)
1..7(7), 4..7(4), 7..7(1)
8+7+4+1=20
10) for (int r = 0; r <= 9; r++)
for (int z = 0; z < 3; z++)
for (int k=0; k < 4; k++)
action();
10*3*4=120
4+16=20
11) int[] values new int[20];
for (int r = 0; r < values.length; r++)
if ( r % 3 = = 0 || r % 10 = = r)
values[r] = r;
else
values[r] = -r;
What is the value of:
a) values[3] = 3
b) values[7] = 7
D:\231209323.doc
c)
d)
values[10] = -10
values[13] = -13
Consider the following class
public class Widgets
{
public int swim(int k) { … }
public int swim(int k, boolean f) { … }
public int run(int k, int m) { … }
public int run(double x) { … }
public int run(int k, double x) { … }
}
Which of the following method(s) can be added to Widgets and NOT cause a compile error?
public void swim(int w) { … }
public int swim(int[] k) { … }
public int swim(int k, int g) { … }
public int swim(boolean f, int k) { … }
public void run (double x, int w) { … }
public int run (int[] k) { … }
public int run (int m, int k) { … }
public int run (int k, int r, int j) { … }
Consider the following code segment, find the indicated values:
int[] nums = {21, 40, 54, 13, 1, 25, 21, 25, 17, 11, 33, 40, 25}
int d = 0;
for (int r = 0; r < nums.length; r++)
if ( nums[r] < nums[0] ) d++; r = 3, 4, 8, 9
int w = 0;
for (int r = 0; r < nums.length; r++)
if ( nums[r] < 2 * r ) w++; r = 4, 9
int y = 0;
for (int r = 0; r < nums.length; r++)
if ( nums[r] / 10 > nums[r] % 10 ) y++;
r = 0, 1, 2, 6, 11
int h = 0;
for (int r = 0; r < nums.length / 2; r++)
if ( nums[r] = = num[num.length – r - 1] ) h++;
d = 4
D:\231209323.doc
w = 2
y = 5
r = 1, 5
h = 2