题解 | #二维数组中的查找#

刷题第一天打卡：

解法1：for循环遍历

class Solution:
    def Find(self , target: int, array: List[List[int]]) -> bool:
        # write code here
        i = 0
        if array == [[]]:
            return False
        while i < len(array):
            if array[i][0] <= target <= array[i][-1]:
                if target in array[i]:
                    return True
            else:
                i += 1
        return False

超时，故舍弃

解法2：list.extend()函数

https://www.runoob.com/python/att-list-append.html

class Solution:
    def Find(self , target: int, array: List[List[int]]) -> bool:
        # write code here
        result = []
        for i in range(len(array)):
            result.extend(array[i])
        if target in result:
            return True
        else:
            return False