Create 2894-divisible-and-non-divisible-sums-difference.js

Author: everthis

2894-divisible-and-non-divisible-sums-difference.js

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+/**
+ * @param {number} n
+ * @param {number} m
+ * @return {number}
+ */
+const differenceOfSums = function(n, m) {
+    let num1 = 0, num2 = 0
+    for(let i = 1; i <= n; i++) {
+        if(i % m !== 0) num1 += i
+        if(i % m === 0) num2 += i
+    }
+    return num1 - num2
+};