149 lines
No EOL
3.9 KiB
C++
149 lines
No EOL
3.9 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 String{
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char* data;
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int size;
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public:
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String() : data(nullptr), size(0){}
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String(int size) : size(size){
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data = new char[size];
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}
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String(char* str){
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int length = 0;
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for(int i=0;str[i]!='\0';i++) length++;
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this->size = length+1;
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data = new char[size];
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for(int i=0;i<this->size;i++) data[i] = str[i];
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data[size - 1] = '\0';
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}
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String(const String &str){
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this->size = str.size+1;
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data = new char[size];
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for(int i=0;str.size;i++) data[i] = str.data[i];
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data[size-1] = '\0';
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}
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~String(){
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delete[] data;
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}
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int strLength(){
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return size;
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}
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void clear(){
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delete[] data;
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size = 0;
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}
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bool empty(){
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return size == 0;
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}
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int charAt(char c){
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for(int i=0;i<this->size;i++) if(data[i] == c) return i;
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return -1;
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}
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char* getData(){
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return data;
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}
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bool equals(char* str){
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int length = 0;
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for(int i=0;str[i]!='\0';i++) length++;
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if(length != this->size) return false;
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for(int i=0;i<this->size;i++) if(data[i] != str[i]) return false;
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return true;
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}
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bool equalsIgnoreCase(char* str){ // TODO
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for(int i=0;str[i]!='\0' && i<this->size;i++)
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if(data[i] != str[i]) return false;
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return true;
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}
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char* substring(int startIndex, int endIndex){
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char* result = new char[endIndex-startIndex+1];
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for(int i=startIndex;i<endIndex;i++) result[i-startIndex] = data[i];
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result[endIndex-startIndex] = '\0';
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return result;
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}
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char* substring(char* substr, int startIndex){
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char* result;
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for(int i=startIndex;i<this->size;i++){
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if(this->equals(substr)){
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return substring(startIndex, this->size);
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}
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}
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return NULL;
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}
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char* substring(char* substr, int startIndex, int endIndex){
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char* result;
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for(int i=startIndex;i<endIndex;i++){
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if(this->equals(substr)){
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return substring(startIndex, endIndex);
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}
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}
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return NULL;
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}
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void print(){
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if(this->size == 0) cout<<"NULL\n";
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else{
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for(int i=0;i<this->size;i++) cout<<data[i];
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cout<<endl;
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}
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}
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bool startsWith(char* substr) const{
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String str1(data);
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String str2(substr);
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String str3(str1.substring(0, str2.strLength()));
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return str3.equals(substr);
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}
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bool endsWith(char* substr) const{
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String str1(substr);
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String str2(data);
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String str3(str2.substring(str2.strLength()-str1.strLength(), str2.strLength()));
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return str3.equals(substr);
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}
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void concatenate(char* str){
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String str1(str);
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char* newStr = new char[str1.strLength()+this->size+1];
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for(int i=0;i<this->size;i++) newStr[i] = data[i];
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for(int i=0;i<str1.strLength();i++) newStr[i+this->size] = str[i];
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newStr[str1.strLength()+this->size] = '\0';
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delete[] data;
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data = newStr;
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this->size += str1.strLength();
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}
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void insert(int index, char* str){
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String str1(str);
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char* newStr = new char[str1.strLength()+this->size+1];
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for(int i=0;i<str1.strLength()+this->size;i++){
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if(i<index) newStr[i] = data[i];
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else if(i<str1.strLength()+index) newStr[i] = str[i-index];
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else newStr[i] = data[i-index];
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}
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newStr[str1.strLength()+this->size] = '\0';
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delete[] data;
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data = newStr;
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this->size += str1.strLength();
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}
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void remove(char* substr){
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}
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void trim(){
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for(int i=0;this->data[i] == ' ';i++){
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}
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}
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};
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int main(){
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return 0;
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} |