* fix(codes/cpp): Memory leak fix: the space was not freed when pop removed the element.
* fix(codes/cpp): Fix access error when printArray(arr, 0)
* Update PrintUtil.hpp
* fix(codes/c): Fix some errors of cmake build
* feat(codes/c): Add hashing_search.c
* styles(codes/c): Modify function description
* styles(codes/c): Modify binary_search.c code style
* fix(codes/c): Fix the problem in binary_tree_bfs.c and the problem that the memory is not released.
* feat: Add preorder_traversal_i_compact.c
* feat(codes/c): Add head_sort.c
* feat(codes/c): Add bucket_sort.c
* feat(codes/c): Add binary_search_edge.c
* fix(codes/c): Add programs that are not managed by cmake (c code)
* feat(codes/c): Add selection_sort.c
* style(codes/c): Change swap in selection_sort.c to `selectionSort`
* styles(codes/c): Change style.
* fix(codes/c): Fix some formatting errors and temporarily remove backtracking chapters
* fix(codes/c): Fix space_complexity.c build error.
* feat(codes/c): Add array_binary_tree.c
* feat(code/c): Update push_back and pop_back in vector.h
* styles(codes/c): Adjust format.
* feat(codes/c): Add `interation.c ` `recursion.c` `simple_hash.c` `binary_search_edge.c` `binary_search_insertion.c` in C codes.
* fix(mylist.c): Fix `insert` function in `mylist.c`
https://github.com/krahets/hello-algo/discussions/32#discussioncomment-6974163
* fix(array.c): Fix unreleased memory error
---------
Co-authored-by: Yudong Jin <krahets@163.com>
3 changes:
1. In the enlarge part, I didn't change because I didn't find a good way to deal with the local variable and the clear definition. malloc is commonly used in LeetCode so I think it is not bad for a beginner.
2. I changed the initialization of the second array to make it in the same style as C++.
3. In the enlarge part in main, I deleted the code of pointer free to match the array operations. I also changed the operate array in the later part because the enlarged array cannot be assigned to the older array name.
BTW, sorry for updating so late. Reading different version documents and book are really tiring and boring.
