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 | 213 Views, 17669 Search Bots | 125 Words
| Browse | Archive
![Subscribe to Feed Burner Subscribe to Feed Burner](/images/form/rss.gif)
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 | 213 Views, 17669 Search Bots | 125 Words
![Subscribe to Feed Burner Subscribe to Feed Burner](/images/form/rss.gif)
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 | 213 Views, 17669 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
![Subscribe to Feed Burner Subscribe to Feed Burner](/images/form/rss.gif)
Related Articles
- Daily Interview Problem: Buddy Strings
- Palindrome Integers
- Daily Interview Puzzle: Ways to Traverse a Grid
- [Daily Problem] Angles of a Clock
- Daily Interview Question: Find Cycles in a Graph
- Daily Interview Problem: Jump to the End
- Daily Interview Problem: Reverse Words in a String
- Sort a Partially Sorted List
- [Daily Problem] Move Zeros
- Daily Interview Problem: Tree Serialization
©2006~2024 SteakOverCooked - 0.0137 Seconds(s) - 1357.917 KB/s - 12 Online
Memory: 493.5 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" />
![](/images/top.jpg)
18:54:01 up 13 days, 18:33, 2 users, load average: 0.98, 0.86, 0.73 - Server PHP Version: 7.4.33
Read & Write - Normal - Mini - Post - All Comments - Statistics
Be the first one to comment this page !