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feat: add rust solution to lc problem: No.3111 (doocs#3337)

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`@@ -208,6 +208,26 @@ function minRectanglesToCoverPoints(points: number[][], w: number): number {`
`208`	`208`	`}`
`209`	`209`	```
`210`	`210`
	`211`	`+#### Rust`
	`212`	`+`
	`213`	+```rust
	`214`	`+impl Solution {`
	`215`	`+ pub fn min_rectangles_to_cover_points(mut points: Vec<Vec<i32>>, w: i32) -> i32 {`
	`216`	`+ points.sort_by(\|a, b\| a[0].cmp(&b[0]));`
	`217`	`+ let mut ans = 0;`
	`218`	`+ let mut x1 = -(1 << 30);`
	`219`	`+ for p in points {`
	`220`	`+ let x = p[0];`
	`221`	`+ if x1 + w < x {`
	`222`	`+ x1 = x;`
	`223`	`+ ans += 1;`
	`224`	`+ }`
	`225`	`+ }`
	`226`	`+ ans`
	`227`	`+ }`
	`228`	`+}`
	`229`	+```
	`230`	`+`
`211`	`231`	`<!-- tabs:end -->`
`212`	`232`
`213`	`233`	`<!-- solution:end -->`

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Original file line number	Diff line number	Diff line change
`@@ -251,6 +251,26 @@ function minRectanglesToCoverPoints(points: number[][], w: number): number {`
`251`	`251`	`}`
`252`	`252`	```
`253`	`253`
	`254`	`+#### Rust`
	`255`	`+`
	`256`	+```rust
	`257`	`+impl Solution {`
	`258`	`+ pub fn min_rectangles_to_cover_points(mut points: Vec<Vec<i32>>, w: i32) -> i32 {`
	`259`	`+ points.sort_by(\|a, b\| a[0].cmp(&b[0]));`
	`260`	`+ let mut ans = 0;`
	`261`	`+ let mut x1 = -(1 << 30);`
	`262`	`+ for p in points {`
	`263`	`+ let x = p[0];`
	`264`	`+ if x1 + w < x {`
	`265`	`+ x1 = x;`
	`266`	`+ ans += 1;`
	`267`	`+ }`
	`268`	`+ }`
	`269`	`+ ans`
	`270`	`+ }`
	`271`	`+}`
	`272`	+```
	`273`	`+`
`254`	`274`	`<!-- tabs:end -->`
`255`	`275`
`256`	`276`	`<!-- solution:end -->`

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`@@ -0,0 +1,15 @@`
	`1`	`+impl Solution {`
	`2`	`+ pub fn min_rectangles_to_cover_points(mut points: Vec<Vec<i32>>, w: i32) -> i32 {`
	`3`	`+ points.sort_by(\|a, b\| a[0].cmp(&b[0]));`
	`4`	`+ let mut ans = 0;`
	`5`	`+ let mut x1 = -(1 << 30);`
	`6`	`+ for p in points {`
	`7`	`+ let x = p[0];`
	`8`	`+ if x1 + w < x {`
	`9`	`+ x1 = x;`
	`10`	`+ ans += 1;`
	`11`	`+ }`
	`12`	`+ }`
	`13`	`+ ans`
	`14`	`+ }`
	`15`	`+}`

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