4 kyu
Last digits of N^2 == N
57 of 630Ivana
Description:
This is a very simply formulated task. Let's call an integer number N 'green' if N² ends with all of the digits of N. Some examples:
5 is green, because 5² = 25 and 25 ends with 5.
11 is not green, because 11² = 121 and 121 does not end with 11.
376 is green, because 376² = 141376 and 141376 ends with 376.
Your task is to write a function green that returns the nth green number, starting with 1 - green (1) == 1
Input range
n <= 4000
Algorithms
Similar Kata:
Stats:
| Created | Dec 12, 2016 |
| Published | Dec 12, 2016 |
| Warriors Trained | 7187 |
| Total Skips | 1546 |
| Total Code Submissions | 8843 |
| Total Times Completed | 630 |
| Haskell Completions | 57 |
| Python Completions | 303 |
| JavaScript Completions | 66 |
| Java Completions | 194 |
| C# Completions | 42 |
| Total Stars | 307 |
| % of votes with a positive feedback rating | 88% of 160 |
| Total "Very Satisfied" Votes | 129 |
| Total "Somewhat Satisfied" Votes | 23 |
| Total "Not Satisfied" Votes | 8 |
| Total Rank Assessments | 9 |
| Average Assessed Rank | 4 kyu |
| Highest Assessed Rank | 3 kyu |
| Lowest Assessed Rank | 6 kyu |
