C program, Modify the existing vector\'s contents, by erasing 200, then insertin

ID: 3920485 • Letter: C

Question

C program, Modify the existing vector's contents, by erasing 200, then inserting 100 and 102 in the shown locations. Use Vector ADT's erase() and insert() only. Sample output of below program:

#include <stdio.h>
#include <stdlib.h>

// struct and typedef declaration for Vector ADT
typedef struct vector_struct {
int* elements;
unsigned int size;
} vector;

// Initialize vector with specified size
void vector_create(vector* v, unsigned int vectorSize) {
int i;

if (v == NULL) return;

v->elements = (int*)malloc(vectorSize * sizeof(int));
v->size = vectorSize;
for (i = 0; i < v->size; ++i) {
v->elements[i] = 0;
}
}
// Resize the size of the vector
void vector_resize(vector* v, unsigned int vectorSize) {
int oldSize;
int i;
if (v == NULL) return;

oldSize = v->size;
v->elements = (int*)realloc(v->elements, vectorSize * sizeof(int));
v->size = vectorSize;
for (i = oldSize; i < v->size; ++i) {
v->elements[i] = 0;
}
}
// Return pointer to element at specified index
int* vector_at(vector* v, unsigned int index) {
if (v == NULL || index >= v->size) return NULL;

return &(v->elements[index]);
}
// Insert new value at specified index
void vector_insert(vector* v, unsigned int index, int value) {
int i;

if (v == NULL || index > v->size) return;

vector_resize(v, v->size + 1);
for (i = v->size - 1; i > index; --i) {
v->elements[i] = v->elements[i-1];
}
v->elements[index] = value;
}
// Insert new value at end of vector
void vector_push_back(vector* v, int value) {
vector_insert(v, v->size, value);
}
// Erase (remove) value at specified index
void vector_erase(vector* v, unsigned int index) {
int i;

if (v == NULL || index >= v->size) return;

for (i = index; i < v->size - 1; ++i) {
v->elements[i] = v->elements[i+1];
}
vector_resize(v, v->size - 1);
}
// Return number of elements within vector
int vector_size(vector* v) {
if (v == NULL) return -1;

return v->size;
}

void PrintVectors(vector* numberList) {
int i;
for (i = 0; i < vector_size(numberList); ++i) {
printf("%d ", *vector_at(numberList, i));
}
printf(" ");
}

int main(void) {
vector numberList;
vector_create(&numberList, 0);

// Populate vector with 101 200 103
vector_push_back(&numberList, 101);
vector_push_back(&numberList, 200);
vector_push_back(&numberList, 103);

// Erase 200 then insert 100 and 102

/* Your solution goes here */

PrintVectors(&numberList);

return 0;
}

Explanation / Answer

Given below is the modified code for the question.
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