Sumitra(hash practice) #30
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CheezItMan
reviewed
Dec 4, 2021
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| def grouped_anagrams(strings): | ||
| """ This method will return an array of arrays. | ||
| Each subarray will have strings which are anagrams of each other | ||
| Time Complexity: ? | ||
| Space Complexity: ? | ||
| Time Complexity: O(n) | ||
| Space Complexity: O(n) | ||
| """ |
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| def top_k_frequent_elements(nums, k): | ||
| """ This method will return the k most common elements | ||
| In the case of a tie it will select the first occuring element. | ||
| Time Complexity: ? | ||
| Space Complexity: ? | ||
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| Time complexity: O(N log(k)). | ||
| Space complexity: O(N). | ||
| """ |
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| def valid_sudoku(table): | ||
| """ This method will return the true if the table is still | ||
| a valid sudoku table. | ||
| Each element can either be a ".", or a digit 1-9 | ||
| The same digit cannot appear twice or more in the same | ||
| row, column or 3x3 subgrid | ||
| Time Complexity: ? | ||
| Space Complexity: ? | ||
| Time Complexity: O(n2) | ||
| Space Complexity: O(n) | ||
| """ |
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Since Sudoko boards are always 9x9, you can just say O(1) time/space complexity.
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Hash Table Practice
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Comprehension Questions