diff --git a/Data-Structures/Array/ArrayReduceTransformation.js b/Data-Structures/Array/ArrayReduceTransformation.js
new file mode 100644
index 0000000000..1ac003b7d4
--- /dev/null
+++ b/Data-Structures/Array/ArrayReduceTransformation.js
@@ -0,0 +1,13 @@
+/**
+ * @param {number[]} nums
+ * @param {Function} fn
+ * @param {number} init
+ * @return {number}
+ */
+var reduce = function(nums, fn, init) {
+ let val=init; //set current value
+ for(let i=0;i<nums.length;i++){ //iterate over each ele in array
+ val = fn(val, nums[i]);//store the val as function of the current val with the element
+ }
+ return val;//output
+};
\ No newline at end of file
diff --git a/Data-Structures/Array/array-reduce-transformation.js b/Data-Structures/Array/array-reduce-transformation.js
new file mode 100644
index 0000000000..1ac003b7d4
--- /dev/null
+++ b/Data-Structures/Array/array-reduce-transformation.js
@@ -0,0 +1,13 @@
+/**
+ * @param {number[]} nums
+ * @param {Function} fn
+ * @param {number} init
+ * @return {number}
+ */
+var reduce = function(nums, fn, init) {
+ let val=init; //set current value
+ for(let i=0;i<nums.length;i++){ //iterate over each ele in array
+ val = fn(val, nums[i]);//store the val as function of the current val with the element
+ }
+ return val;//output
+};
\ No newline at end of file
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