File: root - text - article - 2019 - 12 - find-the-number-of-islands.txt.txt
Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | Home Page | Category: Computing | 218 Views, 18446 Search Bots | 125 Words
| Browse | Archive
Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | Home Page | Category: Computing | 218 Views, 18446 Search Bots | 125 Words
| Browse | Archive
Hi, here's your problem today. This problem was recently asked by LinkedIn:
Given a 2-dimensional grid consisting of 1's (land blocks) and 0's (water blocks), count the number of islands present in the grid. The definition of an island is as follows:
1.) Must be surrounded by water blocks.
2.) Consists of land blocks (1's) connected to adjacent land blocks (either vertically or horizontally).
Assume all edges outside of the grid are water.
Example:
Input:
Output: 3
Here's your starting point:
Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | Home Page | Cateogry: Computing | 218 Views, 18446 Search Bots | 125 Words Given a 2-dimensional grid consisting of 1's (land blocks) and 0's (water blocks), count the number of islands present in the grid. The definition of an island is as follows:
1.) Must be surrounded by water blocks.
2.) Consists of land blocks (1's) connected to adjacent land blocks (either vertically or horizontally).
Assume all edges outside of the grid are water.
Example:
Input:
10001
11000
10110
00000
Output: 3
Here's your starting point:
class Solution(object):
def inRange(self, grid, r, c):
numRow, numCol = len(grid), len(grid[0])
if r < 0 or c < 0 or r >= numRow or c >= numCol:
return False
return True
def numIslands(self, grid):
# Fill this in.
grid = [[1, 1, 0, 0, 0],
[0, 1, 0, 0, 1],
[1, 0, 0, 1, 1],
[0, 0, 0, 0, 0]]
print(Solution().numIslands(grid))
# 3
Related Articles
- Daily Interview Problem: Find the Number of Islands
- Daily Interview Problem: Validate Binary Search Tree
- Daily Interview Problem: Queue Using Two Stacks
- [Daily Problem] Add two numbers as a linked list
- Daily Interview Problem: Group Words that are Anagrams
- Daily Interview Problem: Count Number of Unival Subtrees
- Algorithm Interview: Smallest Number that is not a Sum of a Subset of List
- Find the non-duplicate number
- Algorithm Interview: Subarray With Target Sum
- Compare Version Numbers
©2006~2024 SteakOverCooked - 0.0192 Seconds(s) - 2844.252 KB/s - 24 Online Memory: 516.96 KB
18:54:01 up 13 days, 18:33, 2 users, load average: 0.98, 0.86, 0.73 - Server PHP Version: 7.4.33
How to Cook a Perfect Steak? | <meta name="robots" content="noindex, follow" />
18:54:01 up 13 days, 18:33, 2 users, load average: 0.98, 0.86, 0.73 - Server PHP Version: 7.4.33
Comments (0)
Read & Write - Normal - Mini - Post - All Comments - Statistics
Be the first one to comment this page !