Merging Arrays
-
How to merge two arrays? Consider the following two arrays: int a[3] = {2,3,5}; int b[3] = {4,6,8}; These two arrays has to be merged and stored in a third array c. My expected result would be : c[6] = {2,3,5,4,6,8}; How to do this?
-
How to merge two arrays? Consider the following two arrays: int a[3] = {2,3,5}; int b[3] = {4,6,8}; These two arrays has to be merged and stored in a third array c. My expected result would be : c[6] = {2,3,5,4,6,8}; How to do this?
I know two solutions:
// Use Array.CopyTo
int[] a = { 2, 4, 6 };
int[] b = { 3, 5, 7 };int[] x = new int[a.Length + b.Length];
a.CopyTo(x, 0);
b.CopyTo(x, b.Length);// Use a List
List c = new List();
c.AddRange(a);
c.AddRange(b);int[] d = c.ToArray();
I would prefer using List<> because it is more powerfull, you can easily search, sort etc.
-
How to merge two arrays? Consider the following two arrays: int a[3] = {2,3,5}; int b[3] = {4,6,8}; These two arrays has to be merged and stored in a third array c. My expected result would be : c[6] = {2,3,5,4,6,8}; How to do this?
OK, I had to delete my first answer, because it was a C# solution. Sorry. Now my brain is switsched in C-mode :) You can use memcpy. But allways be aware of the size of the target array! It has to be large enough to take all of the elements.
int a[] = { 2, 4, 6};
int b[] = { 3, 5, 7};int c[6];
memcpy(c, a, sizeof(a));
memcpy(c + 3, b, sizeof(b)); // + 3 because the first 3 elements are
// allready in useHope it helps.
-
How to merge two arrays? Consider the following two arrays: int a[3] = {2,3,5}; int b[3] = {4,6,8}; These two arrays has to be merged and stored in a third array c. My expected result would be : c[6] = {2,3,5,4,6,8}; How to do this?
-
-
CPallini wrote:
Coding!
Now that's a brilliant idea; who'd a thunk it?
One of these days I'm going to think of a really clever signature.
-
How to merge two arrays? Consider the following two arrays: int a[3] = {2,3,5}; int b[3] = {4,6,8}; These two arrays has to be merged and stored in a third array c. My expected result would be : c[6] = {2,3,5,4,6,8}; How to do this?
1. determine the required size of the resulting container 2. Allocate a container of that size on the heap. 3. copy the elements to the new container. If you have trouble following those steps, you better learn basic C/C++ by reading a good book or tutorial. A good one can be found at http://www.cplusplus.com/doc/tutorial/[^]
-
CPallini wrote:
Another option would be using s
td::vector, and using the insert[^] method.I agree.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
-
How to merge two arrays? Consider the following two arrays: int a[3] = {2,3,5}; int b[3] = {4,6,8}; These two arrays has to be merged and stored in a third array c. My expected result would be : c[6] = {2,3,5,4,6,8}; How to do this?
This is a simple program. I think in my opinion programming skill will develop through thinking, practice etc. here your problem is simple. so try to implement self such a problem. i will give the logic. 1. allocate required array size for destination array. 2.copy the content from source array to destination. I also agree with Richard and pallini :)
