Added my solutions to todays programming introduction exam

1 files changed, 47 insertions, 0 deletions

diff --git a/Year 1/Programming introduction/Exams/Exam1/prob2.cpp b/Year 1/Programming introduction/Exams/Exam1/prob2.cpp
new file mode 100644
index 0000000..c941112
--- /dev/null
+++ b/Year 1/Programming introduction/Exams/Exam1/prob2.cpp
@@ -0,0 +1,47 @@
+#include <iostream>
+
+using namespace std;
+
+bool isNeighbourNum(int n) {
+	while (n != 0) {
+		if (n % 10 == (n / 10) % 10)
+			return false;
+		n /= 10;
+	}
+	return true;
+}
+
+int subNeighbours(int a, int b) {
+	int smallest = 0, biggest = 0;
+
+	for (int i = a; i <= b; i++) {
+		if (isNeighbourNum(i)) {
+			if (i < smallest || !smallest)
+				smallest = i;
+			if (i > biggest || !biggest)
+				biggest = i;
+		}
+	}
+
+	if (!smallest || !biggest) {
+		return -1;
+	}
+
+	return biggest - smallest;
+}
+
+int main() {
+	cout << "a = ";
+	int a;
+	cin >> a;
+	cout << "b = ";
+	int b;
+	cin >> b;
+
+	int sub = subNeighbours(a, b);
+
+	if (sub == -1)
+		cout << "No adjacent numbers!" << endl;
+	else
+		cout << sub << endl;
+}