- #1
fubag
- 105
- 0
I have a few questions:
1. Reversing the elements of an array involves swapping the corresponding elements of the array: the first with the last, the second with the next to the last, and so on, all the way to the middle of the array.
Given an array a , an int variable n containing the number of elements in a , and two other int variables, k and temp , write a loop that reverses the elements of the array.
Do not use any other variables besides a , n , k , and temp .
I have:
for (temp=n;temp>0; temp--;)
{
for (k=0; k<n;k++)
a[k] = a[temp-1];
}
the compiler yells at me and I don't know what's up...just for everyone to know this is a Codelab assignment.
2. You are given two int variables j and k , an int array zipcodeList that has been declared and initialized, an int variable nZips that contains the number of elements in zipcodeList , and an int variable duplicates .
Write some code that assigns 1 to duplicates if any two elements in the array have the same value, and that assigns 0 to duplicates otherwise.
Use only j , k , zipcodeList , nZips , and duplicates .
I have: duplicates=0;
for (j=0; j<(nZips); j++)
{
for (k=0; k<(nZips); k++)
{ if (zipcodeList[j] == zipcodeList[k])
duplicates=1;
}
}
yet the feedback comes back i am not assigning 0 to duplicates if they don't match...
3. Given an array arr of type int , along with two int variables i and j , write some code that swaps the values of arr and arr[j] . Declare any additional variables as necessary.
I wrote:
int x=j;
arr=arr[j];
arr[j]=arr;
- but the feedback comes that only one variable is changing...I don't understand why..
I know it's a lot but if someone can help me on any of them I would appreciate it a lot!
Thanks!
1. Reversing the elements of an array involves swapping the corresponding elements of the array: the first with the last, the second with the next to the last, and so on, all the way to the middle of the array.
Given an array a , an int variable n containing the number of elements in a , and two other int variables, k and temp , write a loop that reverses the elements of the array.
Do not use any other variables besides a , n , k , and temp .
I have:
for (temp=n;temp>0; temp--;)
{
for (k=0; k<n;k++)
a[k] = a[temp-1];
}
the compiler yells at me and I don't know what's up...just for everyone to know this is a Codelab assignment.
2. You are given two int variables j and k , an int array zipcodeList that has been declared and initialized, an int variable nZips that contains the number of elements in zipcodeList , and an int variable duplicates .
Write some code that assigns 1 to duplicates if any two elements in the array have the same value, and that assigns 0 to duplicates otherwise.
Use only j , k , zipcodeList , nZips , and duplicates .
I have: duplicates=0;
for (j=0; j<(nZips); j++)
{
for (k=0; k<(nZips); k++)
{ if (zipcodeList[j] == zipcodeList[k])
duplicates=1;
}
}
yet the feedback comes back i am not assigning 0 to duplicates if they don't match...
3. Given an array arr of type int , along with two int variables i and j , write some code that swaps the values of arr and arr[j] . Declare any additional variables as necessary.
I wrote:
int x=j;
arr=arr[j];
arr[j]=arr;
- but the feedback comes that only one variable is changing...I don't understand why..
I know it's a lot but if someone can help me on any of them I would appreciate it a lot!
Thanks!