Commit | Line | Data |
---|---|---|
e4001676 | 1 | #include <stdlib.h> |
475ee86d | 2 | #include <stdio.h> |
e4001676 | 3 | |
884e9557 | 4 | #include "array.h" |
e4001676 | 5 | |
34f864c6 JB |
6 | int* create_tab(int tab[], unsigned tab_size) { |
7 | tab = malloc(sizeof(int) * tab_size); | |
34dd19e9 | 8 | if (tab != NULL) { |
34f864c6 JB |
9 | /* initialize to zero the integer array */ |
10 | for (unsigned i = 0; i < tab_size; i++) { | |
11 | tab[i] = 0; | |
12 | } | |
e4001676 | 13 | } |
34dd19e9 | 14 | return tab; |
e4001676 JB |
15 | } |
16 | ||
17 | void free_tab(int tab[]) { | |
18 | free(tab); | |
19 | } | |
20 | ||
34f864c6 JB |
21 | /* we suppose both tabs are already created */ |
22 | static void copy_tab(int src_tab[], int dest_tab[], unsigned src_tab_size, unsigned index_offset) { | |
23 | /* FIXME: I think it's worth doing some sanity checks on the array size: | |
24 | * dest_tab_size >= src_tab_size */ | |
475ee86d JB |
25 | if (src_tab == NULL || dest_tab == NULL) { |
26 | printf("please ensure you have created both arrays beforehand\n"); | |
27 | return; | |
28 | } | |
34f864c6 | 29 | for (unsigned i = 0; i < src_tab_size; i++) { |
e4001676 JB |
30 | dest_tab[i + index_offset] = src_tab[i]; |
31 | } | |
32 | } | |
33 | ||
475ee86d JB |
34 | /* one must free the two source tabs in case they will be unused after to concatenation */ |
35 | int* concat_tab(int tab1[], unsigned tab_size1, int tab2[], unsigned tab_size2) { | |
36 | int* tab_dest = NULL; | |
37 | tab_dest = create_tab(tab_dest, tab_size1 + tab_size2); | |
e4001676 JB |
38 | |
39 | copy_tab(tab1, tab_dest, tab_size1, 0); | |
40 | copy_tab(tab2, tab_dest, tab_size2, tab_size1); | |
475ee86d | 41 | return tab_dest; |
e4001676 JB |
42 | } |
43 | ||
59941dc1 | 44 | int* resize_tab(int tab[], unsigned old_tab_size, unsigned new_tab_size) { |
34f864c6 | 45 | tab = realloc(tab, sizeof(int) * new_tab_size); |
ac5c12a4 | 46 | /* zero by default the added cells */ |
59941dc1 JB |
47 | if (old_tab_size < new_tab_size) { |
48 | for (unsigned i = old_tab_size; i < new_tab_size; i++) { | |
49 | tab[i] = 0; | |
50 | } | |
51 | } | |
34dd19e9 | 52 | return tab; |
e4001676 JB |
53 | } |
54 | ||
55 | /* number of occurences of an element in an unsorted array */ | |
889d5862 | 56 | unsigned count_tab_element(int tab[], unsigned tab_size, int element) { |
e4001676 | 57 | unsigned el_count = 0; |
889d5862 | 58 | |
e4001676 JB |
59 | for (unsigned i = 0; i < tab_size; i++) { |
60 | if (tab[i] == element) { | |
61 | el_count++; | |
62 | } | |
63 | } | |
64 | return el_count; | |
65 | } | |
66 | ||
210f7f05 | 67 | unsigned count_tab_criteria(int tab[], unsigned tab_size, c_criteria_cb c_criteria) { |
889d5862 JB |
68 | unsigned cr_count = 0; |
69 | ||
70 | for (unsigned i = 0; i < tab_size; i++) { | |
71 | if (c_criteria(tab[i])) { | |
72 | cr_count++; | |
73 | } | |
74 | } | |
75 | return cr_count; | |
76 | } | |
77 | ||
78 | bool is_even(int a) { | |
79 | return (a % 2 == 0); | |
80 | } | |
81 | ||
82 | bool is_odd(int a) { | |
83 | return (a % 2 != 0); | |
84 | ||
85 | } | |
86 | ||
210f7f05 JB |
87 | void sort_tab(int tab[], unsigned tab_size, s_criteria_cb sort_criteria) { |
88 | sort_bubble_array(tab, tab_size, sort_criteria); | |
e4001676 | 89 | } |