Week10-VasilMladenov-5MI0600475

Week10/Practicum_Solutions.cpp

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+#include <iostream>
+
+const size_t SIZE = 1024;
+
+void swap(char& a, char& b)
+{
+	char temp = a;
+	a = b;
+	b = temp;
+}
+
+void shiftLeft(char* str)
+{
+	if (!str) return;
+
+	while (*str)
+	{
+		*str = *(str + 1);
+		str++;
+	}
+}
+
+size_t getSize(const char* str)
+{
+	if (!str) return 0;
+
+	size_t count = 0;
+	while (*str)
+	{
+		count++;
+		str++;
+	}
+	return count;
+}
+
+// Ex. 1
+void myReverse(char* str)
+{
+	size_t strSize = getSize(str);
+
+	for (size_t i = 0; i < strSize / 2; i++)
+	{
+		swap(str[i], str[strSize - i - 1]);
+	}
+}
+
+
+// Ex. 2
+bool isVowel(char sym)
+{
+	return sym == 'A' || sym == 'E' || sym == 'I' || sym == 'O' || sym == 'U' ||
+		sym == 'a' || sym == 'e' || sym == 'i' || sym == 'o' || sym == 'u';
+}
+
+char toUpper(char sym)
+{
+	if ('a' <= sym && sym <= 'z')
+	{
+		return sym - 'a' + 'A';
+	}
+	return sym;
+}
+
+char toLower(char sym)
+{
+	if ('A' <= sym && sym <= 'Z')
+	{
+		return sym - 'A' + 'a';
+	}
+	return sym;
+}
+
+void vowelsToUpperConosantsToLower(char* str)
+{
+	if (!str) return;
+
+	while (*str)
+	{
+		if (isVowel(*str))
+		{
+			*str = toUpper(*str);
+			str++;
+			continue;
+		}
+		if ('A' <= *str && *str <= 'Z')
+		{
+			*str = toLower(*str);
+		}
+		str++;
+	}
+}
+
+// Ex. 3
+bool isDigit(char sym)
+{
+	return '0' <= sym && sym <= '9';
+}
+
+void censorNumbers(char* str)
+{
+	if (!str) return;
+
+	bool isCensored = false;
+	while (*str)
+	{
+		if (isCensored)
+		{
+			if (isDigit(*str))
+			{
+				shiftLeft(str);
+				continue;
+			}
+			isCensored = false;
+			str++;
+			continue;
+		}
+		if (isDigit(*str))
+		{
+			*str = '*';
+			isCensored = true;
+		}
+		str++;
+	}
+}
+
+
+// Ex. 4
+int charCompare(const char a, const char b)
+{
+	return a - b;
+}
+
+void sortCharacters(const char* str, char* result)
+{
+	if (!str || !result) return;
+
+	size_t strSize = getSize(str);
+	for (size_t i = 0; i < strSize; i++)
+	{
+		result[i] = toLower(str[i]);
+	}
+
+	for (size_t i = 0; i < strSize - 1; i++)
+	{
+		size_t minIndex = i;
+		for (size_t j = i + 1; j < strSize; j++)
+		{
+			if (charCompare(toLower(result[minIndex]), toLower(result[j])) > 0)
+			{
+				minIndex = j;
+			}
+		}
+		swap(result[i], result[minIndex]);
+	}
+	result[strSize] = '\0';
+}
+
+
+// Ex. 5
+void swap(int*& a, int*& b)
+{
+	int* temp = a;
+	a = b;
+	b = temp;
+}
+
+
+// Ex. 6
+size_t getAllWords(char* str, char** words)
+{
+	if (!str) return 0;
+
+	size_t wordIndex = 0, wordElement = 0;
+	while (*str)
+	{
+		if (*str == ' ')
+		{
+			if (wordElement == 0)
+			{
+				str++;
+				continue;
+			}
+			words[wordIndex][wordElement] = '\0';
+			wordIndex++;
+			wordElement = 0;
+			str++;
+			continue;
+		}
+		words[wordIndex][wordElement] = *str;
+		wordElement++;
+		str++;
+	}
+	if (wordElement > 0)
+		words[wordIndex++][wordElement] = '\0';
+
+	return wordIndex;
+}
+
+int main()
+{
+	// Ex. 1
+	/*char str[SIZE];
+	std::cin.getline(str, SIZE);
+	myReverse(str);
+	std::cout << str << std::endl;*/
+
+
+	// Ex. 2
+	/*char str[SIZE];
+	std::cin.getline(str, SIZE);
+	vowelsToUpperConosantsToLower(str);
+	std::cout << str << std::endl;*/
+
+
+	// Ex. 3
+	/*char str[SIZE];
+	std::cin.getline(str, SIZE);
+	censoreNumbers(str);
+	std::cout << str << std::endl;*/
+
+
+	// Ex. 4
+	/*char str[SIZE];
+	std::cin.getline(str, SIZE);
+	char result[SIZE];
+	sortCharacters(str, result);
+	std::cout << result << std::endl;*/
+
+
+	// Ex. 5
+	/*int* a = new int(5);
+	int* b = new int(10);
+	swap(a, b);
+	std::cout << *a << " " << *b << std::endl;*/
+
+
+	// Ex. 6
+	/*const size_t STRING_SIZE = 10000;
+	const size_t WORDS_COUNT = 100;
+
+	char* str = new char[STRING_SIZE];
+	std::cin.getline(str, STRING_SIZE);
+	char** words = new char*[WORDS_COUNT];
+	for (int i = 0; i < WORDS_COUNT; i++)
+	{
+		words[i] = new char[SIZE];
+	}
+	size_t wordsCount = getAllWords(str, words);
+
+	for (size_t i = 0; i < wordsCount; i++)
+	{
+		std::cout << words[i] << "|\n";
+	}
+
+	delete[] str;
+	for (size_t i = 0; i < WORDS_COUNT; i++)
+	{
+		delete[] words[i];
+	}
+	delete[] words;*/
+}