hacktoberfest2022

pc++.cpp

@@ -0,0 +1,36 @@
+// CPP program to count frequencies of array items
+#include <bits/stdc++.h>
+using namespace std;
+
+void countFreq(int arr[], int n)
+{
+	// Mark all array elements as not visited
+	vector<bool> visited(n, false);
+
+	// Traverse through array elements and
+	// count frequencies
+	for (int i = 0; i < n; i++) {
+
+		// Skip this element if already processed
+		if (visited[i] == true)
+			continue;
+
+		// Count frequency
+		int count = 1;
+		for (int j = i + 1; j < n; j++) {
+			if (arr[i] == arr[j]) {
+				visited[j] = true;
+				count++;
+			}
+		}
+		cout << arr[i] << " " << count << endl;
+	}
+}
+
+int main()
+{
+	int arr[] = { 10, 20, 20, 10, 10, 20, 5, 20 };
+	int n = sizeof(arr) / sizeof(arr[0]);
+	countFreq(arr, n);
+	return 0;
+}