Created
September 23, 2019 07:58
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Scampa's problem: Rotate Image (https://leetcode.com/problems/rotate-image/)
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| class Solution: | |
| def rotate(self, matrix: list) -> None: | |
| n = len(matrix) | |
| for col in range(n//2): | |
| for i in range(col, n-col-1): | |
| startVal = matrix[col][i] | |
| current = start = (col, i) | |
| while True: | |
| next_ = self.getNext(current, n) | |
| if next_ == start: | |
| matrix[current[0]][current[1]] = startVal | |
| break | |
| self.swap(current, next_, matrix) | |
| current = next_ | |
| return matrix | |
| def swap(self, first, second, m): | |
| m[first[0]][first[1]], m[second[0]][second[1]] = m[second[0]][second[1]], m[first[0]][first[1]] | |
| def getNext(self, current, n): | |
| return (n-current[1]-1, current[0]) | |
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