Лекция 06 - Решаване на задачите от контролното

Решения и насоки за задачите от контролното

A клас

#include <stdio.h>

int find_biggest_digit_score(unsigned int);

int main(){

	printf("%d", find_biggest_digit_score(538624263));

	return 0;
}

int find_biggest_digit_score(unsigned int number) {
	int max = number % 10;

	while(number > 0) {
		int digit = number % 10;

		if (digit > max) {
			max = digit;
		}

		number = number / 10;
	}

	return max;
}

#include <stdio.h>

int find_smallest_diff(int[]);
int abs_diff(int, int);

int main() {

	int arr[] = { 5, 7, 3, 4, 1, 6, 8, 10, 2, 9 };

	printf("%d\n", find_smallest_diff(arr));

	return 0;
}


int find_smallest_diff(int arr[10]) {
	int min = abs_diff(arr[0], arr[1]);

	for (int i = 0; i < 10; i++) {
		for (int j = 0; j < 10; j++) {
			if (i == j) continue;
			//if (i != j) {

			//}

			int diff = abs_diff(arr[i], arr[j]);

			if (diff < min) {
				min = diff;
			}

		}
	}

	return min;
}

int abs_diff(int a, int b) {
	if (b > a) {
		return b - a;
	}

	return a - b;
}

#include <stdio.h>

void convert_to_mocking_case(char *);

int main(int argc, char **argv) {

	for (int i = 1; i < argc; i++) {
		convert_to_mocking_case(argv[i]);
	}

	return 0;
}

void convert_to_mocking_case(char *str) {

}

Б клас

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

float find_average_digit(unsigned long number) {
  float sum = 0;
  int count = 0;

  if(number == 0) {
    return 0;
  }

  while(number > 0) {
    int digit = number % 10;
    sum += digit;
    count++;
    //count += 1;
    number /= 10;
  }

  return sum / count;
}

int find_largest_difference(int arr[10]) {
  int largest_diff = 0;
  for(int i = 0; i < 10; i++) {
    for(int j = i + 1; j < 10; j++) {
      int diff = abs(arr[i] - arr[j]);

      if(diff > largest_diff) {
        largest_diff = diff;
      }
    }
  }
  return largest_diff;
}


void trim_start(char *str) {
  int space_count = 0;

  while(str[space_count] == ' ') {
    space_count++;
  }

  for(int j = 0; j < strlen(str) - space_count; j++) {
    str[j] = str[j + space_count];
  }
}

void trim_end(char *str) {
  int i = strlen(str) - 1;
  //for(; i > 0 && str[i] == ' '; i--) {}
  while(i > 0 && str[i] == ' ') {
    i--;
  }

  str[i+1] = '\0';
}

void trim(char *str) {
  trim_start(str);
  trim_end(str);
}


int main() {
  //printf("%f\n", find_average_digit(0));
  //printf("%f\n", find_average_digit(1234));

  //int numbers[] = { 5, 7, 3, 4, 1, 5, 8, 10, 2, 1 };
  //printf("%d\n", find_largest_difference(numbers));

  char str[] = {' ', ' ', 'a', 'b', ' ', ' ', '\0'};
  printf("'%s'\n", str);
  trim(str);
  printf("'%s'\n", str);
  return 0;
}

В клас

#include <stdio.h>

int find_even_digit(unsigned long);

int main() {

	printf("%d\n", find_even_digit(1573775));
	printf("%d\n", find_even_digit(0));
	printf("%d\n", find_even_digit(12213538));

	return 0;
}

int find_even_digit(unsigned long number) {

	while (number != 0) {
		int digit = number % 10;

		if (digit % 2 == 0) {
			return 1;
		}

		number = number / 10;
	}

	return 0;

}

#include <stdio.h>

int multiply_by_biggest(int[]);

int main() {

	int arr[] = { 5, 7, 3, 4, 1, 5, 8, 10, 2, 9 };

	printf("\n%d\n", multiply_by_biggest(arr));

	return 0;
}

int multiply_by_biggest(int arr[10]) {
	int max = arr[0];

	for (int i = 0; i < 10; i++) {
		if (arr[i] > max) {
			max = arr[i];
		}
	}

	for (int i = 0; i < 10; i++) {
		printf("%d ", arr[i] * max);
	}

	return max;
}

#include <stdio.h>

int count_vowels(char*);
int count_consonants(char*);

int main(int argc, char **argv) {

	printf("%d\n", count_vowels(argv[1]));
	printf("%d\n", count_consonants(argv[1]));
	return 0;
}

int count_vowels(char *str) {
	int count = 0;
	for (int i = 0; str[i] != '\0'; i++) {
		if (str[i] == 'a' ||
			str[i] == 'o' ||
			str[i] == 'i' ||
			str[i] == 'u' ||
			str[i] == 'e') {
			count++;
		}

		if (str[i] == 'A' ||
			str[i] == 'O' ||
			str[i] == 'I' ||
			str[i] == 'U' ||
			str[i] == 'E') {
			count++;
		}
	}

	return count;
}

int count_consonants(char *str) {

}

Г клас

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int find_biggest_digit_score(unsigned long number) {
  int biggest = 0;

  while(number > 0) {
    int digit = number % 10;
    if(digit > biggest) {
      biggest = digit;
    }
    number /= 10;
  }

  return biggest;
}

int find_smallest_difference(int arr[10]) {
  int smallest_diff = abs(arr[0] - arr[1]);

  for(int i = 0; i < 10; i++) {
    for(int j = i+1; j < 10; j++) {
      int diff = abs(arr[i] - arr[j]);
      if(diff < smallest_diff) {
        smallest_diff = diff;
      }
    }
  }

  return smallest_diff;
}

void convert_to_mocking_case(char *str) {
  int letters_distance = 'a' - 'A';

  for(int i = 0; i < strlen(str); i += 2) {
    if(str[i] >= 'a' && str[i] <= 'z') {
      str[i] -= letters_distance;
    } else if(str[i] >= 'A' && str[i] <= 'Z') {
      str[i] += letters_distance;
    }
  }
}


int main(int argc, char** argv) {
  //printf("%d\n", find_biggest_digit_score(123));
  //printf("%d\n", find_biggest_digit_score(-123));

  //int numbers[] = { 5, 7, 3, 4, 1, 20, 8, 10, 2, 9 };
  //printf("%d\n", find_smallest_difference(numbers));

  for(int i = 1; i < argc; i++) {
    convert_to_mocking_case(argv[i]);
    printf("%s\n", argv[i]);
  }

  return 0;
}