add new solutions

solutions/9/q944/solution.go

@@ -0,0 +1,16 @@
+package q944
+
+func minDeletionSize(strs []string) int {
+	nDel := 0
+	for col := range len(strs[0]) {
+		for row := 1; row < len(strs); row++ {
+			if strs[row][col] < strs[row-1][col] {
+				nDel++
+				break
+			}
+		}
+	}
+	return nDel
+}
+
+var _ = minDeletionSize