From 2c85b404000ca5cab7d75af1c086b6e39c796527 Mon Sep 17 00:00:00 2001
From: fartem <jaman.smlnsk@gmail.com>
Date: Fri, 15 Nov 2024 10:11:57 +0300
Subject: [PATCH 1/2] 2024-11-15 v. 7.0.4: added "435. Non-overlapping
 Intervals"

---
 README.md                                     |  1 +
 leetcode-ruby.gemspec                         |  2 +-
 lib/medium/435_non_overlapping_intervals.rb   | 20 ++++++++
 .../test_435_non_overlapping_intervals.rb     | 46 +++++++++++++++++++
 4 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 lib/medium/435_non_overlapping_intervals.rb
 create mode 100644 test/medium/test_435_non_overlapping_intervals.rb

diff --git a/README.md b/README.md
index 095a8fef..17ebcd65 100644
--- a/README.md
+++ b/README.md
@@ -569,3 +569,4 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 417. Pacific Atlantic Water Flow                                | [Link](https://leetcode.com/problems/pacific-atlantic-water-flow/)                                | [Link](./lib/medium/417_pacific_atlantic_water_flow.rb)                                | [Link](./test/medium/test_417_pacific_atlantic_water_flow.rb)                                |
 | 424. Longest Repeating Character Replacement                    | [Link](https://leetcode.com/problems/longest-repeating-character-replacement/)                    | [Link](./lib/medium/424_longest_repeating_character_replacement.rb)                    | [Link](./test/medium/test_424_longest_repeating_character_replacement.rb)                    |
 | 429. N-ary Tree Level Order Traversal                           | [Link](https://leetcode.com/problems/n-ary-tree-level-order-traversal/)                           | [Link](./lib/medium/429_n_ary_tree_level_order_traversal.rb)                           | [Link](./test/medium/test_429_n_ary_tree_level_order_traversal.rb)                           |
+| 435. Non-overlapping Intervals                                  | [Link](https://leetcode.com/problems/non-overlapping-intervals/)                                  | [Link](./lib/medium/435_non_overlapping_intervals.rb)                                  | [Link](./test/medium/test_435_non_overlapping_intervals.rb)                                  |
diff --git a/leetcode-ruby.gemspec b/leetcode-ruby.gemspec
index f0022c50..8ce59b91 100644
--- a/leetcode-ruby.gemspec
+++ b/leetcode-ruby.gemspec
@@ -5,7 +5,7 @@ require 'English'
 ::Gem::Specification.new do |s|
   s.required_ruby_version = '>= 3.0'
   s.name = 'leetcode-ruby'
-  s.version = '7.0.3'
+  s.version = '7.0.4'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'
diff --git a/lib/medium/435_non_overlapping_intervals.rb b/lib/medium/435_non_overlapping_intervals.rb
new file mode 100644
index 00000000..a4934591
--- /dev/null
+++ b/lib/medium/435_non_overlapping_intervals.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/non-overlapping-intervals/
+# @param {Integer[][]} intervals
+# @return {Integer}
+def erase_overlap_intervals(intervals)
+  intervals.sort_by(&:first)
+  max = intervals.first.last
+  result = 0
+  intervals.each do |inter|
+    if inter.first < max
+      result += 1
+      max = [max, inter.last].min
+    else
+      max = inter.last
+    end
+  end
+
+  result - 1
+end
diff --git a/test/medium/test_435_non_overlapping_intervals.rb b/test/medium/test_435_non_overlapping_intervals.rb
new file mode 100644
index 00000000..aaa88c79
--- /dev/null
+++ b/test/medium/test_435_non_overlapping_intervals.rb
@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/medium/435_non_overlapping_intervals'
+require 'minitest/autorun'
+
+class NonOverlappingIntervalsTest < ::Minitest::Test
+  def test_default_one
+    assert_equal(
+      1,
+      erase_overlap_intervals(
+        [
+          [1, 2],
+          [2, 3],
+          [3, 4],
+          [1, 3]
+        ]
+      )
+    )
+  end
+
+  def test_default_two
+    assert_equal(
+      2,
+      erase_overlap_intervals(
+        [
+          [1, 2],
+          [1, 2],
+          [1, 2]
+        ]
+      )
+    )
+  end
+
+  def test_default_three
+    assert_equal(
+      0,
+      erase_overlap_intervals(
+        [
+          [1, 2],
+          [2, 3]
+        ]
+      )
+    )
+  end
+end

From a1e2a72e4cd1de3eed796eb2900af4d37343c989 Mon Sep 17 00:00:00 2001
From: fartem <jaman.smlnsk@gmail.com>
Date: Fri, 15 Nov 2024 10:13:53 +0300
Subject: [PATCH 2/2] 2024-11-15 v. 7.0.4: fixed "435. Non-overlapping
 Intervals"

---
 lib/medium/435_non_overlapping_intervals.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/medium/435_non_overlapping_intervals.rb b/lib/medium/435_non_overlapping_intervals.rb
index a4934591..372958a9 100644
--- a/lib/medium/435_non_overlapping_intervals.rb
+++ b/lib/medium/435_non_overlapping_intervals.rb
@@ -4,7 +4,7 @@
 # @param {Integer[][]} intervals
 # @return {Integer}
 def erase_overlap_intervals(intervals)
-  intervals.sort_by(&:first)
+  intervals.sort_by!(&:first)
   max = intervals.first.last
   result = 0
   intervals.each do |inter|