1 files changed, 41 insertions, 0 deletions
diff --git a/challenge-337/hvukman/lua/337_p2.lua b/challenge-337/hvukman/lua/337_p2.lua
new file mode 100644
index 0000000000..4a04e36647
--- /dev/null
+++ b/challenge-337/hvukman/lua/337_p2.lua
@@ -0,0 +1,41 @@
+function oddmatrix(row,col,locs)
+
+    local mat = {}
+    for i=1,row do
+        mat[i]={}
+        for j=1,col do
+            mat[i][j]=0
+        end
+    end
+
+    for i,v in ipairs(locs) do
+      
+        -- apply to rows
+        for k=1,col do
+            mat[v[1]+1][k]=mat[v[1]+1][k]+1
+        end
+        -- apply to cols
+        for l=1,row do
+            mat[l][v[2]+1] =  mat[l][v[2]+1]+1
+        end
+
+    end
+
+
+    local odds=0
+
+    for i=1,row do
+        for j=1,col do
+            if mat[i][j]%2~=0 then
+                odds = odds + 1
+            end
+        end
+    end
+    print("odds ", odds)
+end
+
+oddmatrix(2,3,{{0,1},{1,1}})
+oddmatrix(2,2,{{1,1},{0,0}})
+oddmatrix(3,3,{{0,0},{1,2},{2,1}})
+oddmatrix(1,5,{{0,2},{0,4}})
+oddmatrix(4,2,{{1,0},{3,1},{2,0},{0,1}})