Merge pull request #651 from maple3142/master

[FEATURE] Add initializeNDArray

snippets/initializeNDArray.md

@@ -0,0 +1,16 @@
+### initializeNDArray
+
+Create a n-dimensional array with given value.
+
+Use recursion.
+Use `Array.map()` to generate rows where each is a new array initialized using `initializeNDArray`.
+
+```js
+const initializeNDArray = (val, ...args)=>
+  args.length === 0 ? val : Array.from({ length: args[0] }).map(() => initializeNDArray(val, ...args.slice(1)));
+```
+
+```js
+initializeNDArray(1,3); // [1,1,1]
+initializeNDArray(5,2,2,2); // [[[5,5],[5,5]],[[5,5],[5,5]]]
+```