Daniela - Leaves #27
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Daniela - Leaves #27
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CheezItMan
reviewed
Nov 20, 2019
| @@ -1,8 +1,20 @@ | |||
| # Improved Fibonacci | |||
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| # Time Complexity - ? | |||
| # Time Complexity - O(n) | |||
| # Space Complexity - ? (should be O(n)) | |||
| # Hint, you may want a recursive helper method | |||
| def fibonacci(n) | |||
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This works, but you don't need to keep the entire list of fibonacci numbers for the entire length of the recursion. Instead you only need to keep the last two fibonacci numbers.
| def super_digit(n) | ||
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| return n if [0,1,2,3,4,5,6,7,8,9].include?(n) == true |
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Why not just:
Suggested change
| return n if [0,1,2,3,4,5,6,7,8,9].include?(n) == true | |
| return n if n < 10 |
| # Time Complexity - ? | ||
| # Space Complexity - ? | ||
| # Time Complexity - O(n), depends on number of digits | ||
| # Space Complexity : O(1) as the array of digits will always be same and I will always have same variables (sum, reminder, superdigit) | ||
| def refined_super_digit(n, k) |
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This works, but you can use the super_digit method previously to help solve the problem.
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