Consider an Iterator<Integer> variable called iter for a structure containing the following data: 0, 1, 2,...
Consider an Iterator<Integer> variable called iter for a structure containing the following data: 0, 1, 2, 3, 4, 5. What will the resulting sequence be if the following methods are called:
iter.next();
iter.next();
iter.remove();
iter.remove();
|
2, 3, 4, 5 |
||
|
0, 1, 4, 5 |
||
|
0, 3, 4, 5 |
||
|
An IllegalStateException will occur |
Homework Answers
The resulting sequence be 0, 1, 4, 5
This is because after two iter.next(); the
iterator is at 2 then iter.remove(); removes
2 and the iterator goes to 3 and
iter.remove(); removes 3.
So, the output sequence is 0,1,4,5.
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Consider an Iterator<Integer> variable called iter for a
structure containing the following data: 0, 1, 2,...
Consider the following class definition class FibSequence implements Iterablexnteger public Iterator<Integer> iterator) return new FibIterator); private class FibIterator implements Iterator<...
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Array with Iterator. Java style
Implement an array data structure as a class JstyArray<E>
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works:
JstyArray<Integer> data;
data = new JstyArray<Integer>(10);
for (int i = 0; i < 10; ++i) {
data.set(i, new Integer(i) );
}
int sum = 0;
for ( int v : data ) {
if (v == null)
continue; // empty cell
sum += v;
}
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Implement an array data structure as a class JstyArray<E>
to support the Iterable interface such that the following code
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JstyArray<Integer> data;
data = new JstyArray<Integer>(10);
for (int i = 0; i < 10; ++i) {
data.set(i, new Integer(i) );
}
int sum = 0;
for ( int v : data ) {
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(a) Given the following integer list: 10 23 12 34 a[0] a[1] a[2] a[3] a[4] Show a trace (step by step) for each execution of Bubble Sort based on the following algorithm. //passes llone pass l/one comparison for (pass = 1 ; pass<= n ; pass++) for (i = 0); i<=n-2; i++) if (a[i] > a[i+1]) { hold = a[i]; a[i] = a[i+1]; a[i+1] = hold; } l/one swap (6 marks)
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8. [10 points) Consider the following algorithm procedure Algorithm(: integer, n: positive integer; 81,...a s integers with vhilei<r print (l, r, mı, arn, 》 if z > am then 1:= m + 1 if za then anstwer-1 return answer 18 and the (a) Assume that this algorithm receives as input the numbersz-32 and corresponding sequence of integers 2 | 3 1 1 4151617| 8| 9 | 10 İ 11 İ 12 | 13 | 14|15 | 16 | 17 |...
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1.Choose a positive integer
2. To get the next number in the sequence we do the following:
If the integer is odd, we multiply by 3 and add 1. If the integer
is even, we divide by 2. It is hypothesized that the above sequence
will always converge to the value of 1, regardless of any valid
initial choice. This hypothesis is known as the Collatz Conjecture.
For example, if we start at 5, the numbers generated by...
TRUE/FALSE 1. If pl is an integer pointer variable, with the value of 1000, pl++ changes P1 to point to the memory location 1001. ANSWER: T 2. When you return a dynamic array to the freestore, you must include the number of elements in the array 3. You can assign an array to a pointer variable. 4. The size of dynamic arrays must be declared at compile time. 5. int *pl; declares a static variable. ANSWER: F ANSWER: F ANSWER:...
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