implementing function for frequency count

algorithms/CPlusPlus/Arrays/freqcount.cpp

@@ -0,0 +1,43 @@
+#include <bits/stdc++.h>
+using namespace std;
+const int N = 1e7 + 10;
+int hshp[N];
+int hshn[N];
+
+int main()
+{
+    int q;
+    int x;
+    int n;
+    cin >> n;
+    int a[n];
+    for (int i = 0; i < n; i++)
+    {
+
+        cin >> a[i];
+        if (a[i] < 0)
+        {
+            hshn[abs(a[i])]++;
+        }
+        else
+        {
+            hshp[a[i]]++;
+        }
+    }
+    cin >> q;
+    while (q--)
+
+    {
+        cin >> x;
+        if (x < 0)
+        {
+            cout << hshn[abs(x)];
+        }
+        else
+        {
+            cout << hshp[x] << endl;
+        }
+    }
+}
+
+// hash array