Commit bf0309f

authored

Merge pull request youngyangyang04#2824 from miaoxu404/master

Update 0101.孤岛的总面积.md

2 parents 66947ee + 57cec75 commit bf0309fCopy full SHA for bf0309f

File tree

1 file changed

+58

-5

lines changed

problems/kamacoder
- 0101.孤岛的总面积.md

1 file changed

+58

-5

lines changed

`‎problems/kamacoder/0101.孤岛的总面积.md`

Lines changed: 58 additions & 5 deletions

Original file line number	Diff line number	Diff line change
`@@ -257,6 +257,54 @@ public class Main {`
`257`	`257`
`258`	`258`
`259`	`259`	`### Python`
	`260`	`+#### 深搜版`
	`261`	+```python
	`262`	`+position = [[1, 0], [0, 1], [-1, 0], [0, -1]]`
	`263`	`+count = 0`
	`264`	`+`
	`265`	`+def dfs(grid, x, y):`
	`266`	`+ global count`
	`267`	`+ grid[x][y] = 0`
	`268`	`+ count += 1`
	`269`	`+ for i, j in position:`
	`270`	`+ next_x = x + i`
	`271`	`+ next_y = y + j`
	`272`	`+ if next_x < 0 or next_y < 0 or next_x >= len(grid) or next_y >= len(grid[0]):`
	`273`	`+ continue`
	`274`	`+ if grid[next_x][next_y] == 1:`
	`275`	`+ dfs(grid, next_x, next_y)`
	`276`	`+`
	`277`	`+n, m = map(int, input().split())`
	`278`	`+`
	`279`	`+# 邻接矩阵`
	`280`	`+grid = []`
	`281`	`+for i in range(n):`
	`282`	`+ grid.append(list(map(int, input().split())))`
	`283`	`+`
	`284`	`+# 清除边界上的连通分量`
	`285`	`+for i in range(n):`
	`286`	`+ if grid[i][0] == 1:`
	`287`	`+ dfs(grid, i, 0)`
	`288`	`+ if grid[i][m - 1] == 1:`
	`289`	`+ dfs(grid, i, m - 1)`
	`290`	`+`
	`291`	`+for j in range(m):`
	`292`	`+ if grid[0][j] == 1:`
	`293`	`+ dfs(grid, 0, j)`
	`294`	`+ if grid[n - 1][j] == 1:`
	`295`	`+ dfs(grid, n - 1, j)`
	`296`	`+`
	`297`	`+count = 0 # 将count重置为0`
	`298`	`+# 统计内部所有剩余的连通分量`
	`299`	`+for i in range(n):`
	`300`	`+ for j in range(m):`
	`301`	`+ if grid[i][j] == 1:`
	`302`	`+ dfs(grid, i, j)`
	`303`	`+`
	`304`	`+print(count)`
	`305`	+```
	`306`	`+`
	`307`	`+#### 广搜版`
`260`	`308`	```python
`261`	`309`	`from collections import deque`
`262`	`310`
`@@ -293,17 +341,22 @@ def bfs(r, c):`
`293`	`341`
`294`	`342`
`295`	`343`	`for i in range(n):`
`296`		`- if g[i][0] == 1: bfs(i, 0)`
`297`		`- if g[i][m-1] == 1: bfs(i, m-1)`
	`344`	`+ if g[i][0] == 1:`
	`345`	`+ bfs(i, 0)`
	`346`	`+ if g[i][m-1] == 1:`
	`347`	`+ bfs(i, m-1)`
`298`	`348`
`299`	`349`	`for i in range(m):`
`300`		`- if g[0][i] == 1: bfs(0, i)`
`301`		`- if g[n-1][i] == 1: bfs(n-1, i)`
	`350`	`+ if g[0][i] == 1:`
	`351`	`+ bfs(0, i)`
	`352`	`+ if g[n-1][i] == 1:`
	`353`	`+ bfs(n-1, i)`
`302`	`354`
`303`	`355`	`count = 0`
`304`	`356`	`for i in range(n):`
`305`	`357`	`for j in range(m):`
`306`		`- if g[i][j] == 1: bfs(i, j)`
	`358`	`+ if g[i][j] == 1:`
	`359`	`+ bfs(i, j)`
`307`	`360`
`308`	`361`	`print(count)`
`309`	`362`	```

0 commit comments

Comments

(0)

Navigation Menu

Search code, repositories, users, issues, pull requests...

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Commit bf0309f

File tree

1 file changed

1 file changed

`‎problems/kamacoder/0101.孤岛的总面积.md`

0 commit comments