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#include <iostream>
#include <cmath>
#include <stdlib.h> // rand and srand for ex. 5
using namespace std;
/*
* Exercise 1
*/
double f(unsigned int k, int x) {
double sum = x;
for (unsigned int i = 2; i <= k; i++) {
if (i & 1) // if odd
sum = 3 * sum + 1;
else
sum /= 2;
}
return sum;
}
void ex1() {
int x;
cin >> x;
cout << f(35, x) << endl;
}
/*
* Exercise 2
*/
void setMarmaladeType(int type, int *blueberryMarmalades, int *peachMarmalades, int *rosehipMarmalades) {
if (type % 7 == 0) *blueberryMarmalades += 1;
else if (type % 13 == 0) *peachMarmalades += 1;
else if (type % 17 == 0) *rosehipMarmalades += 1;
}
void ex2() {
int archiveLength;
cin >> archiveLength;
int blueberryMarmalades = 0, peachMarmalades = 0, rosehipMarmalades = 0;
for (int i = 0, digit, countryDigits, typeDigits, type; i < archiveLength; i++) {
cin >> digit;
cout << digit;
if (i % 8 == 0) {
countryDigits = 1;
typeDigits = type = 0;
}
else if (countryDigits < 3) {
countryDigits++;
}
else if (typeDigits < 4) {
typeDigits++;
(type *= 10) += digit;
}
else if (typeDigits == 4) {
cout << endl;
setMarmaladeType(type, &blueberryMarmalades, &peachMarmalades, &rosehipMarmalades);
}
}
cout << "Мармалад от боровинки: " << blueberryMarmalades << endl;
cout << "Мармалад от праскови: " << peachMarmalades << endl;
cout << "Шипков мармалад: " << rosehipMarmalades << endl;
}
/*
* Exercise 4
*/
bool isInteresting(int n) {
int lastDigit;
do {
lastDigit = n % 10;
n /= 10;
if ((lastDigit & 1) == ((n % 10) & 1))
return false;
} while (n != 0);
return true;
}
int sumOfInterestingNumsBetween(int a, int b) {
int sum = 0;
for (int i = a; i <= b; i++) {
if (isInteresting(i))
sum += i;
}
return sum;
}
void ex4() {
int a, b;
cin >> a >> b;
cout << sumOfInterestingNumsBetween(a, b) << endl;
}
/*
* Exercise 5
*/
const int NUMBER_LENGTH = 4, N = 10;
int genSecretNum() {
// Initializes random seed (required for getting a random number on every program launch)
// Taken from included reference: https://www.cplusplus.com/reference/cstdlib/rand#example
srand (time(NULL));
int rnd = rand(), result = 0;
for (int i = 0; i < NUMBER_LENGTH;) {
if (rnd % 10 != 0) {
(result *= 10) += rnd % 10;
i++;
}
else if (rnd == 0) {
rnd = rand();
}
rnd /= 10;
}
return result;
}
bool digitInsideNum(int digit, int num) {
while (num != 0) {
if (digit == num % 10)
return true;
num /= 10;
}
return false;
}
void countBullsAndCows(int secretNum, int guess, int *bulls, int *cows) {
*bulls = *cows = 0;
// If our secret num can contain zeroes, this (and the corresponding checks) should be changed to some other digit
int secretCows = 0, guessCows = 0;
/* Find bulls and separate the numbers that dont make a bull */
for (int i = 0; i < NUMBER_LENGTH; i++) {
if (guess % 10 == secretNum % 10)
*bulls += 1;
else {
(secretCows *= 10) += secretNum % 10;
// Getting unique cows prevents the later cow loop from incrementing cows
// multiple times when we have duplicate digits in secretNum and in guessCows
if (!digitInsideNum(guess % 10, guessCows))
(guessCows *= 10) += guess % 10;
}
secretNum /= 10;
guess /= 10;
}
while (secretCows != 0) {
if (digitInsideNum(secretCows % 10, guessCows))
*cows += 1;
secretCows /= 10;
}
}
void playBullsAndCows() {
int secNum = genSecretNum(), guess = 0, bulls = 0, cows = 0;
cout << secNum << endl;
for (int i = 0; i < N; i++) {
cin >> guess;
if (guess == secNum) {
cout << "Позна!" << endl;
return;
}
else {
countBullsAndCows(secNum, guess, &bulls, &cows);
cout << bulls << " бикове и " << cows << " крави" << endl;
}
}
cout << "Не позна в определения брой ходове!" << endl;
}
void ex5() {
playBullsAndCows();
}
int main() {
ex5();
}
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