题目
解题
"""
时间复杂度为 O(log(m * n)),其中 m 是矩阵的行数,n 是矩阵的列数。
"""
def searchMatrix(matrix, target):
if not matrix or not matrix[0]:
return False
m, n = len(matrix), len(matrix[0])
left, right = 0, m * n - 1
while left <= right:
mid = (left + right) // 2
mid_value = matrix[mid // n][mid % n]
if mid_value == target:
return True
elif mid_value < target:
left = mid + 1
else:
right = mid - 1
return False
matrix = [[1, 3, 5, 7], [10, 11, 16, 20], [23, 30, 34, 60]]
target = 3
print(searchMatrix(matrix, target)) # True