Leetcode 400. Nth Digit - 6 failed submissions

Sept. 6, 2018

Introduction

It is the first easy level math algorithm I worked on. I chose Nth digit. I just could not believe that I came out the steps to work on, but my coding skills and also test skills did not catch up. I lost control of time and bugs were difficult to identify.

My practice with struggle 

Here is my first C# submission.

Failed test case:
input: 10
output: 0
expected: 1

Six failed submissions

It is such a battle against the following errors:

First submission, 27/70 test cases passed, failed test case:

input:10

output:0

Expected: 1

24/70 test cases passed, failed test case:

input: 11

output: 1

expected: 0

42/70 test cases passed, failed test case:

input: 100

output: 1

expected: 5

43/70 test cases passed, failed test case:

input: 1000

output: 4

expected: 3

Runtime Error

Unhandled Exception:

IndexoutofrangeException

getDigitInInteger

Wrong answer

43/70 test cases passed, failed test case:

Input: 1000

Output: 4

Expected: 3

Here is 6th failed submission - C# code. Here is the link I shared on discuss panel. 

I will write the working one based on the same idea. It is hard to write, I need to handle int out-of-range issue. It is best practice to learn how to handle integer out of range issue.