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Update 0200.岛屿数量.广搜版.md

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`@@ -199,7 +199,9 @@ class Solution {`
`199`	`199`
`200`	`200`
`201`	`201`	`### Python`
	`202`	`+`
`202`	`203`	`BFS solution`
	`204`	`+`
`203`	`205`	```python
`204`	`206`	`class Solution:`
`205`	`207`	`def __init__(self):`
`@@ -240,6 +242,7 @@ class Solution:`
`240`	`242`
`241`	`243`	```
`242`	`244`	`### JavaScript`
	`245`	`+`
`243`	`246`	```javascript
`244`	`247`	`var numIslands = function (grid) {`
`245`	`248`	`let dir = [[0, 1], [1, 0], [-1, 0], [0, -1]]; // 四个方向`
`@@ -324,7 +327,6 @@ function numIslands2(grid: string[][]): number {`
`324`	`327`	`### Go`
`325`	`328`
`326`	`329`	```go
`327`		`-`
`328`	`330`	`var DIRECTIONS = [4][2]int{{-1, 0}, {0, -1}, {1, 0}, {0, 1}}`
`329`	`331`
`330`	`332`	`func numIslands(grid [][]byte) int {`

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