leetcode1341

Posted 2021-03-12 AsenYang

 1 class Solution:
 2     def kWeakestRows(self, mat: ‘List[List[int]]‘, k: int) -> ‘List[int]‘:
 3         m = len(mat)
 4         n = len(mat[0])
 5         counter = [0] * m
 6         for i in range(m):
 7             for j in range(n):
 8                 if mat[i][j] == 1:
 9                     counter[i] += 1
10                 else:
11                     break
12         #print(counter)
13         at = []
14         for i in range(len(counter)):
15             at.append((i,counter[i]))
16         at = sorted(at,key=lambda x:(x[1],x[0]))
17         result = []
18         for x in range(k):
19             result.append(at[x][0])
20         return result

算法思路：排序。