add up to n numbers program added

Author: sanjaydeveloper15

Random-Questions/add-up-to-n.js

@@ -0,0 +1,30 @@
+const n = 10;
+
+/**
+ * 
+ * @param {*} n Integer
+ * Time complexity = O(n)
+ * Space complexity = O(1)
+ */
+const addUpTo = (n) => {
+    if (typeof n != 'number') {
+        console.warn('Only numbers allowed')
+    }
+    let sum = 0
+    for (let i = 1; i <= n; i++) {
+        sum += i
+    }
+    console.log(`Result: ${sum}`);
+}
+console.info(`------------ Program with O(n) ------------`)
+addUpTo(n)
+
+const addUpToOpt = (n) => {
+    if (typeof n != 'number') {
+        console.warn('Only numbers allowed')
+    }
+    const sum = n*(n+1)/2
+    console.log(`Result: ${sum}`);
+}
+console.info(`------------ Program with O(1) ------------`)
+addUpToOpt(n)