Merge pull request #2541 from aadil42/patch-43

Create 0303-range-sum-query-immutable.js

Author: aakhtar3

Diff for: javascript/0303-range-sum-query-immutable.js

@@ -0,0 +1,29 @@
+/**
+ * https://leetcode.com/problems/range-sum-query-immutable/
+ * @param {number[]} nums
+ */
+class NumArray {
+    constructor(nums) {
+        this.arr = nums;
+    }
+
+    /** 
+     * Time O(n) | Space O(1)
+     * @param {number} left 
+     * @param {number} right
+     * @return {number}
+     */
+    sumRange(left, right) {
+        let total = 0;
+        for (let i = left; i < right + 1; i++) {
+            total += this.arr[i];
+        }
+        return total;
+    }
+}
+
+/** 
+ * Your NumArray object will be instantiated and called as such:
+ * var obj = new NumArray(nums)
+ * var param_1 = obj.sumRange(left,right)
+ */