test

.config/Code/User/History/55be9cdd/g7iV.cpp

@@ -0,0 +1,149 @@
+/*
+Rafay Ahmad
+23I-2526
+*/
+#include <iostream>
+using namespace std;
+
+class String{
+    char* data;
+    int size;
+
+public:
+
+    String() : data(nullptr), size(0){}
+    String(int size) : size(size){
+        data = new char[size];
+    }
+    String(char* str){
+        int length = 0;
+        for(int i=0;str[i]!='\0';i++) length++;
+        this->size = length+1;
+        data = new char[size];
+        for(int i=0;i<this->size;i++) data[i] = str[i];
+        data[size - 1] = '\0';
+    }
+    String(const String &str){
+        this->size = str.size+1;
+        data = new char[size];
+        for(int i=0;str.size;i++) data[i] = str.data[i];
+        data[size-1] = '\0';
+    }
+    ~String(){
+        delete[] data;
+    }
+
+    int strLength(){
+        return size;
+    }
+    void clear(){
+        delete[] data;
+        size = 0;
+    }
+    bool empty(){
+        return size == 0;
+    }
+    int charAt(char c){
+        for(int i=0;i<this->size;i++) if(data[i] == c) return i;
+        return -1;
+    }
+    char* getData(){
+        return data;
+    }
+    bool equals(char* str){
+        int length = 0;
+        for(int i=0;str[i]!='\0';i++) length++;
+        if(length != this->size) return false;
+        for(int i=0;i<this->size;i++) if(data[i] != str[i]) return false;
+        return true;
+    }
+    bool equalsIgnoreCase(char* str){ // TODO
+        for(int i=0;str[i]!='\0' && i<this->size;i++)
+            if(data[i] != str[i]) return false;
+        return true;
+    }
+    char* substring(int startIndex, int endIndex){
+        char* result = new char[endIndex-startIndex+1];
+        for(int i=startIndex;i<endIndex;i++) result[i-startIndex] = data[i];
+        result[endIndex-startIndex] = '\0';
+        return result;
+    }
+    char* substring(char* substr, int startIndex){
+        char* result;
+        for(int i=startIndex;i<this->size;i++){
+            if(this->equals(substr)){
+                return substring(startIndex, this->size);
+            }
+        }
+        return NULL;
+    }
+    char* substring(char* substr, int startIndex, int endIndex){
+        char* result;
+        for(int i=startIndex;i<endIndex;i++){
+            if(this->equals(substr)){
+                return substring(startIndex, endIndex);
+            }
+        }
+        return NULL;
+    }
+    void print(){
+        if(this->size == 0) cout<<"NULL\n";
+        else{
+            for(int i=0;i<this->size;i++) cout<<data[i];   
+            cout<<endl;
+        }
+    }
+    bool startsWith(char* substr) const{
+        String str1(data);
+        String str2(substr);
+        String str3(str1.substring(0, str2.strLength()));
+        return str3.equals(substr);
+    }
+    bool endsWith(char* substr) const{
+        String str1(substr);
+        String str2(data);
+        String str3(str2.substring(str2.strLength()-str1.strLength(), str2.strLength()));
+        return str3.equals(substr);
+    }
+    void concatenate(char* str){
+        String str1(str);
+        char* newStr = new char[str1.strLength()+this->size+1];
+        for(int i=0;i<this->size;i++) newStr[i] = data[i];
+        for(int i=0;i<str1.strLength();i++) newStr[i+this->size] = str[i];
+        newStr[str1.strLength()+this->size] = '\0';
+        delete[] data;
+        data = newStr;
+        this->size += str1.strLength();
+    }
+    void insert(int index, char* str){
+        String str1(str);
+        char* newStr = new char[str1.strLength()+this->size+1];
+        for(int i=0;i<str1.strLength()+this->size;i++){
+            if(i<index) newStr[i] = data[i];
+            else if(i<str1.strLength()+index) newStr[i] = str[i-index];
+            else newStr[i] = data[i-index];
+        }
+        newStr[str1.strLength()+this->size] = '\0';
+        delete[] data;
+        data = newStr;
+        this->size += str1.strLength();
+    }
+    void remove(char* substr){
+        
+    }
+    void trim(){
+        int start = 0, end = this->size;
+        for(int i=0;this->data[i] == ' ';i++) start++;
+        
+        
+    }
+
+
+};
+
+int main(){
+
+    
+
+    return 0;
+}