From c557338b02658880d8b893ded3d3c3611e29d67c Mon Sep 17 00:00:00 2001
From: Rohit Tanwar <mst10041967@gmail.com>
Date: Sun, 31 Dec 2017 17:26:28 +0530
Subject: [PATCH] add sampleSize

---
 snippets/sampleSize.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 snippets/sampleSize.md

diff --git a/snippets/sampleSize.md b/snippets/sampleSize.md
new file mode 100644
index 000000000..ef4ca3e63
--- /dev/null
+++ b/snippets/sampleSize.md
@@ -0,0 +1,19 @@
+### sampleSize
+
+Returns the length of string.
+
+```js
+const sampleSize = (arr,n=1) => {
+  let m = arr.length;
+  while (m) {
+    const i = Math.floor(Math.random() * m--);
+    [arr[m], arr[i]] = [arr[i], arr[m]];
+  }
+  return arr.slice(0,n)
+}
+```
+
+```js
+sampleSize([1,2,3],2); // [3,1]
+sampleSize([1,2,3],4); // [2,3,1]
+```