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 | 211 Views, 17316 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 | 211 Views, 17316 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 | 211 Views, 17316 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
- Absolute Path
- Daily Interview Problem: Reconstrunct Binary Tree from Preorder and Inorder Traversals
- Skip the readings, focus on problems. And use all the hints!
- Algorithm Interview: Make the Largest Number
- Progess made
- [Daily Problem] Longest Palindromic Substring
- Daily Interview Problem: Room scheduling
- How to Play WAV music under DOS?
- Daily Interview Problem: Validate Binary Search Tree
- Consecutive Ones
©2006~2024 SteakOverCooked - 0.01331 Seconds(s) - 1345.488 KB/s - 43 Online Memory: 493.87 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 !