标签:bool Plan ber put eve output one xpl load
A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element.
Now given an M x N matrix, return True if and only if the matrix is Toeplitz.
Example 1:
Input:
matrix = [
[1,2,3,4],
[5,1,2,3],
[9,5,1,2]]
Output: True
Explanation:
In the above grid, the diagonals are:
"[9]", "[5, 5]", "[1, 1, 1]", "[2, 2, 2]", "[3, 3]", "[4]".
In each diagonal all elements are the same, so the answer is True.
Example 2:
Input:
matrix = [
[1,2],
[2,2]]
Output: False
Explanation:
The diagonal "[1, 2]" has different elements.
Note:
Follow up:
class Solution:
def isToeplitzMatrix(self, matrix):
"""
:type matrix: List[List[int]]
:rtype: bool
"""
if len(matrix)==0:
return True
for i in range(1,len(matrix)):
for j in range(1,len(matrix[0])):
if matrix[i][j]!=matrix[i-1][j-1]:
return False
return True
标签:bool Plan ber put eve output one xpl load
原文地址:https://www.cnblogs.com/bernieloveslife/p/9801104.html