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Contents
# Ocr Numbers
Given a 3 x 4 grid of pipes, underscores, and spaces, determine which number is
represented, or whether it is garbled.
# Step One
To begin with, convert a simple binary font to a string containing 0 or 1.
The binary font uses pipes and underscores, four rows high and three columns wide.
```
_ #
| | # zero.
|_| #
# the fourth row is always blank
```
Is converted to "0"
```
#
| # one.
| #
# (blank fourth row)
```
Is converted to "1"
If the input is the correct size, but not recognizable, your program should return '?'
If the input is the incorrect size, your program should return an error.
# Step Two
Update your program to recognize multi-character binary strings, replacing garbled numbers with ?
# Step Three
Update your program to recognize all numbers 0 through 9, both individually and as part of a larger string.
```
_
_|
|_
```
Is converted to "2"
```
_ _ _ _ _ _ _ _ #
| _| _||_||_ |_ ||_||_|| | # decimal numbers.
||_ _| | _||_| ||_| _||_| #
# fourth line is always blank
```
Is converted to "1234567890"
# Step Four
Update your program to handle multiple numbers, one per line. When converting several lines, join the lines with commas.
```
_ _
| _| _|
||_ _|
_ _
|_||_ |_
| _||_|
_ _ _
||_||_|
||_| _|
```
Is converted to "123,456,789"
To run the tests:
```sh
$ gradle test
```
For more detailed info about the Java track see the [help page](http://exercism.io/languages/java).
## Source
Inspired by the Bank OCR kata [http://codingdojo.org/cgi-bin/wiki.pl?KataBankOCR](http://codingdojo.org/cgi-bin/wiki.pl?KataBankOCR)
## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
Version data entries
51 entries across 51 versions & 1 rubygems