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vector.c
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81 lines (69 loc) · 1.45 KB
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#include <stdio.h>
#include <stdlib.h>
typedef struct {
int len;
int current;
int* contents;
} Vector;
void init(Vector* vec, int val) {
vec->contents = (int*)malloc(sizeof(int));
vec->contents[0] = val;
vec->current = 0;
vec->len = 1;
}
void delete(Vector* vec) {
free(vec->contents);
}
void clear(Vector* vec) {
delete(vec);
init(vec, 0);
}
int len(Vector* vec) {
return vec->len;
}
void push(Vector* vec, int val) {
vec->contents = realloc(vec->contents, (sizeof(int) * (vec->len + 1)));
vec->contents[vec->len] = val;
vec->len++;
}
int get(Vector* vec, int index) {
if(index < vec->len) {
return vec->contents[index];
}
return -1;
}
void set(Vector* vec, int index, int val) {
if(index < vec->len) {
vec->contents[index] = val;
}
}
int next(Vector* vec) {
if(vec->current == vec->len) {
vec->current = 0;
}
int current_val = vec->contents[vec->current];
vec->current++;
return current_val;
}
void* begin(Vector* vec) {
return (void*)vec->contents;
}
void print(Vector* vec) {
int size = vec->len;
printf("[ ");
for(int count = 0; count < size; count++) {
printf("%d ", vec->contents[count]);
}
printf("]\n");
}
int main() {
Vector vec;
init(&vec, 10);
push(&vec, 20);
print(&vec);
set(&vec, 0, 11);
set(&vec, 1, 22);
print(&vec);
printf("Length: %d\n", len(&vec));
return 0;
}