Find column element check using hashtable

Author: sudheerj

src/javascript/algorithms/array/verifyCommonElements.js

@@ -0,0 +1,26 @@
+function isCommonElementExistsWithObject(arr1, arr2) {
+    let obj = {};
+    for (let i =0; i < arr1.length; i++) {
+        obj[arr1[i]] = true;
+    }
+    for (let j =0; j < arr2.length; j++) {
+        if(obj[arr2[j]]) return true;
+    }
+    return false;
+}
+
+function isCommonElementExistsWithMap(arr1, arr2) {
+    let map = new Map();
+    for (let i of arr1) {
+        map.set(i, true);
+    }
+    for (let j of arr2) {
+        if(map.get(j)) return true;
+    }
+    return false;
+}
+
+const arr1 = [10, 43, 9, 7];
+const arr2 = [17, 33, 10, 2];
+isCommonElementExistsWithObject(arr1, arr2);
+isCommonElementExistsWithMap(arr1, arr2);