diff --git a/hashing.cpp b/hashing.cpp
new file mode 100644
index 0000000..0fd7703
--- /dev/null
+++ b/hashing.cpp
@@ -0,0 +1,44 @@
+#include <bits/stdc++.h>
+using namespace std;
+#define MAX 1000
+
+bool has[MAX + 1][2];
+
+bool search(int X)
+{
+	if (X >= 0) {
+		if (has[X][0] == 1)
+			return true;
+		else
+			return false;
+	}
+
+	X = abs(X);
+	if (has[X][1] == 1)
+		return true;
+
+	return false;
+}
+
+void insert(int a[], int n)
+{
+	for (int i = 0; i < n; i++) {
+		if (a[i] >= 0) 
+			has[a[i]][0] = 1;
+	else
+			has[abs(a[i])][1] = 1;
+	}
+}
+
+int main()
+{
+	int a[] = { -1, 9, -5, -8, -5, -2 };
+	int n = sizeof(a)/sizeof(a[0]);
+	insert(a, n);
+	int X = -5;
+	if (search(X) == true)
+	cout << "Present"; 
+	else
+	cout << "Not Present";
+	return 0;
+}