From 5ca5b1d170f591341b15a45d8d6e122f9fcfe219 Mon Sep 17 00:00:00 2001
From: Chantelle Belic <chantelle.belic@gmail.com>
Date: Thu, 15 Nov 2018 18:10:49 -0800
Subject: [PATCH 1/2] tests pass

---
 lib/matrix_check_sum.rb | 41 ++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 40 insertions(+), 1 deletion(-)

diff --git a/lib/matrix_check_sum.rb b/lib/matrix_check_sum.rb
index dc2a66b..03fa45e 100644
--- a/lib/matrix_check_sum.rb
+++ b/lib/matrix_check_sum.rb
@@ -2,6 +2,45 @@
 # whether the sum of each row matches the sum of corresponding column i.e. sum
 # of numbers in row i is the same as the sum of numbers in column i for i = 0 to row.length-1
 # If this is the case, return true. Otherwise, return false.
+
+require 'pry'
 def matrix_check_sum(matrix)
-  raise NotImplementedError
+  i = 0
+  matrix_len = matrix.length #rows
+
+
+  # len = matrix_len.dup
+
+  matrix_len.times do
+
+    c_sum = 0
+    r_sum = 0
+    j = 0
+
+    row_len = matrix[i].length
+    #
+    # len2 = row_len.dup
+
+    row_len.times do
+
+
+      if matrix[j][i] != nil
+        c_sum += matrix[j][i]
+      end
+
+      if matrix[i][j] != nil
+        r_sum += matrix[i][j]
+      end
+
+      j+= 1
+    end
+
+    if c_sum != r_sum
+      return false
+    end
+
+    i += 1
+  end
+
+  return true
 end

From 5da13b1d5f4741d0e301f60f1841e96668e63a8e Mon Sep 17 00:00:00 2001
From: Chantelle Belic <chantelle.belic@gmail.com>
Date: Sat, 1 Dec 2018 19:51:56 -0800
Subject: [PATCH 2/2] cleanup

---
 lib/matrix_check_sum.rb | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/lib/matrix_check_sum.rb b/lib/matrix_check_sum.rb
index 03fa45e..7a3ed5c 100644
--- a/lib/matrix_check_sum.rb
+++ b/lib/matrix_check_sum.rb
@@ -8,9 +8,6 @@ def matrix_check_sum(matrix)
   i = 0
   matrix_len = matrix.length #rows
 
-
-  # len = matrix_len.dup
-
   matrix_len.times do
 
     c_sum = 0
@@ -18,8 +15,6 @@ def matrix_check_sum(matrix)
     j = 0
 
     row_len = matrix[i].length
-    #
-    # len2 = row_len.dup
 
     row_len.times do