【劍指】二維數組中的查找

class Solution: def findNumberIn2DArray(self, matrix: List[List[int]], target: int) -> bool: if not matrix: return False m, n = len(matrix),len(matrix[0]) i,j = 0, n-1 while i<m and j>=0: if matrix[i][j]>target: j-=1 elif matrix[i][j]<target: i+=1 else: return True return False