From ba03727fb6cef1ab4a06f994ffe549030f53f163 Mon Sep 17 00:00:00 2001
From: Jessica Kwok <jessicatckwok@gmail.com>
Date: Mon, 15 Mar 2021 09:52:22 -0700
Subject: [PATCH] Add solution using delete_if Ruby method

---
 data_structures/arrays/remove_elements.rb | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/data_structures/arrays/remove_elements.rb b/data_structures/arrays/remove_elements.rb
index e407c7b..84abca7 100644
--- a/data_structures/arrays/remove_elements.rb
+++ b/data_structures/arrays/remove_elements.rb
@@ -14,5 +14,16 @@
 # Output: 5, nums = [0,1,4,0,3]
 
 #
-# Approach 1: Brute Force
-#
\ No newline at end of file
+# Approach 1: Use `delete_if` Ruby method
+#
+# Time complexity: O(n)
+#
+def remove_elements(nums, val)
+  nums.delete_if{ |num| num == val }
+  nums.length
+end
+
+puts remove_elements([3,2,2,3], 3)
+# => 2
+puts remove_elements([0,1,2,2,3,0,4,2], 2)
+# => 5
\ No newline at end of file