127 lines
No EOL
2.3 KiB
C++
127 lines
No EOL
2.3 KiB
C++
/*
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Rafay Ahmad
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23I-2526
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*/
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#include <iostream>
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using namespace std;
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class ResizableArray{
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int* arr;
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int size;
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int i;
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void increaseCapacity(){
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int* newArr = new int[size*2];
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for(int j=0;j<size;j++){
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newArr[j] = arr[j];
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}
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delete arr;
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arr = newArr;
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size *= 2;
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}
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void decreaseCapacity(){
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int* newArr = new int[size/2];
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for(int j=0;j<size;j++){
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newArr[j] = arr[j];
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}
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delete arr;
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arr = newArr;
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size /= 2;
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}
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public:
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ResizableArray() : size(10), i(0), arr(new int[size]){}
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void add(int value){
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if(i >= size) increaseCapacity();
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arr[i] = value;
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i++;
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}
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bool insert(int index, int value){
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if(index < 0 || index > size) return false;
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else{
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if(i >= size) increaseCapacity();
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for(int j=i;j>=index;j--){
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arr[j+1] = arr[j];
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}
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arr[index] = value;
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i++;
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}
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return true;
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}
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bool remove(int index){
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if(index < 0 || index > size) return false;
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else{
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for(int j=index;j<i-1;j++){
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arr[j] = arr[j+1];
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}
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i--;
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if(i < size/4) decreaseCapacity();
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}
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return true;
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}
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bool updateElement(int index, int value){
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if(index < 0 || index > size) return false;
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arr[index] = value;
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return true;
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}
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int get(int index) const{
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if(index < 0 || index > size) return -1;
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return arr[index];
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}
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int getSize() const{
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return i;
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}
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int capacity() const{
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return size;
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}
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void clear(){
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delete arr;
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arr = new int[1];
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i = 0;
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}
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void reverse(){
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int* newArr = new int[size];
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for(int j=0;j<i;j++){
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newArr[j] = arr[i-j-1];
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}
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delete arr;
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newArr = arr;
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}
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int find(int value) const{
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for(int j=0;j<i;j++){
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if(arr[j] = value) return j;
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}
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return -1;
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}
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};
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int main(){
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ResizableArray arr;
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arr.add(4);
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arr.add(3);
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arr.add(2);
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arr.add(5);
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arr.add(6);
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for(int i=0;i<arr.getSize();i++){
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arr.get(i);
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}
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return 0;
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} |