//codes in DynamicString.cpp

#include "DynamicString.h"

int DynamicString::myStringLen(const char* str){ //TODO::Implement me return -1; }

DynamicString::DynamicString(){ //TODO::1::Implement me }

DynamicString::DynamicString(const char* str){ //TODO::1::Implement me }

int DynamicString::len() const{ //TODO::1::Implement me return -1; }

const char* DynamicString::c_str() const{ //TODO::1::Implement me return nullptr; }

char& DynamicString::char_at(int position){ //TODO::1::Implement me char* a = new char('a'); return *a; }

char DynamicString::char_at(int position) const{ //TODO::1::Implement me return 'a'; }

char& DynamicString::operator[](int position){ //TODO::1::Implement me char* a = new char('a'); return *a; }

char DynamicString::operator[](int position) const{ //TODO::1::Implement me return 'a'; }

bool DynamicString::isPrefix(const DynamicString& other) const{ //TODO::1::Implement me return false; }

bool DynamicString::isIPrefix(const DynamicString& other) const{ //TODO::1::Implement me return false; }

bool DynamicString::isSuffix(const DynamicString& other) const{ //TODO::1::Implement me return false; }

bool DynamicString::isISuffix(const DynamicString& other) const{ //TODO::1::Implement me return false; }

int DynamicString::compare(const DynamicString& other) const{ //TODO::1::Implement me return 0; }

int DynamicString::iCompare(const DynamicString& other) const{ //TODO::1::Implement me return 0; }

DynamicString& DynamicString::toLower(){ //TODO::1::Implement me return *this; }

DynamicString& DynamicString::toUpper(){ //TODO::1::Implement me return *this; }

DynamicString::DynamicString(const DynamicString& other){ //TODO::2::Implement me }

DynamicString::~DynamicString(){ //TODO::2::Implement me }

DynamicString& DynamicString::operator=(const DynamicString& other){ //TODO::2::Implement me return *this; }

DynamicString DynamicString::trim(){ //TODO::2::Implement me return *this; }

DynamicString DynamicString::operator+(const DynamicString& other) const{ //TODO::2::Implement me return *this; }

DynamicString DynamicString::concat(const DynamicString& other) const{ //TODO::2::Implement me return *this; }

int DynamicString::find(int start, char c) const{ //TODO::2::Implement me return -1; }

int DynamicString::reverseFind(int start, char c) const{ //TODO::2::Implement me return -1; }

void DynamicString::subStr(char* buf, int start, int end) const{ //TODO::2::Implement me }

String Library Part 2 Assignment

When implementing the String class you are not allowed to use the string header file, cstring header file or C++ strings.

Requirements:

Implement the following string methods correctly and pass all the test cases. There shouldn't be any memory leaks.

• DynamicString() //Constructs an empty string
• DynamicString(const char* str) //Constructs a string by copying the characters from he char array str
• int len() const //returns the length of this string
• const char* c_str() const // returns a pointer to the underlying char array
• char& char_at(int position) //returns the char at the specified position
• char char_at(int position) const // returns the char at the specified position
• char& operator[](int position) // returns the char at the specified position
• char operator[](int position) const // returns the char at the specified position
• bool isPrefix(const DynamicString& other) const //True if other is a prefix of this string
• bool isIPrefix(const DynamicString& other) const //True if other is a prefix of this string ignoring case(capitalization)
• bool isSuffix(const DynamicString& other) const //True if other is a suffix of this string
• bool isISuffix(const DynamicString& other) const //True if other is a suffix of this string ignoring case (capitalization)
• int compare(const DynamicString& other) const // negative if this is smaller than other, 0 if this is equal to other, positive if this is larger than other
• int iCompare(const DynamicString& other) const // same as compare but is case-insensetive
• DynamicString& toLower() // converts the string to lowercase
• DynamicString& toUpper() // converts the string to uppercase

• DynamicString(const DynamicString& other) //Creates a deep-copy of other
• DynamicString& operator=(const DynamicString& other) //Creates a deep-copy of other and assigns it to this
• ~DynamicString() //Destructor frees dynamically allocated memory
• DynamicString& DynamicString::trim() //Removes leading and trailing whitespace characters from the string
• DynamicString DynamicString::operator+(const DynamicString& other) const //Concatenates this with other and returns a copy of the concatenation.
• DynamicString DynamicString::concat(const DynamicString& other) const //Concatenates this with other and returns a copy of the concatenation.
• int DynamicString::find(int start, char c) const //Return the index of the first occurrence of the char c. (-1 if the char c is not in the string)
• int DynamicString::reverseFind(int start, char c) const //Return the index of the last occurrence of the char c. (-1 if the char c is not in the string)
• void DynamicString::subStr(char* buf, int start, int end) const //Stores a substring of this in buf. The substring starts at start (inclusive) and ends at end (exclusive).

Helpful C++ library methods:

• tolower
• toupper
• out_of_range

• isspace