Jota + is the best text editor for Android.
Jota + is easy to use. And have great capacity and great performance.
For documentation, for programming, Jota + offers the best experience of a text editor.
+ Numerous character codes support and automatic detection function.
+ Search / Replace (Support Regular Expression)
+ Highlight search words.
+ Customize support font. (Proportional / Mono Space / ttf, otf font)
+ Support Install+shortcut feature.
+ Save Auto.
+ Display line numbers.
+ Display Tab / Line+break mark.
+ Count characters / words / lines.
+ Customizable toolbar.
For More Info Google Play
varies with device