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feat: add rust solution to lc problem: No.2570 (doocs#1204)

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Lines changed: 27 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -182,6 +182,33 @@ function mergeArrays(nums1: number[][], nums2: number[][]): number[][] {`
`182`	`182`	`}`
`183`	`183`	```
`184`	`184`
	`185`	`+### Rust`
	`186`	`+`
	`187`	+```rust
	`188`	`+impl Solution {`
	`189`	`+ pub fn merge_arrays(nums1: Vec<Vec<i32>>, nums2: Vec<Vec<i32>>) -> Vec<Vec<i32>> {`
	`190`	`+ let mut cnt = vec![0; 1001];`
	`191`	`+`
	`192`	`+ for x in &nums1 {`
	`193`	`+ cnt[x[0] as usize] += x[1];`
	`194`	`+ }`
	`195`	`+`
	`196`	`+ for x in &nums2 {`
	`197`	`+ cnt[x[0] as usize] += x[1];`
	`198`	`+ }`
	`199`	`+`
	`200`	`+ let mut ans = vec![];`
	`201`	`+ for i in 0..cnt.len() {`
	`202`	`+ if cnt[i] > 0 {`
	`203`	`+ ans.push(vec![i as i32, cnt[i] as i32]);`
	`204`	`+ }`
	`205`	`+ }`
	`206`	`+`
	`207`	`+ ans`
	`208`	`+ }`
	`209`	`+}`
	`210`	+```
	`211`	`+`
`185`	`212`	`### ...`
`186`	`213`
`187`	`214`	```

Lines changed: 27 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -166,6 +166,33 @@ function mergeArrays(nums1: number[][], nums2: number[][]): number[][] {`
`166`	`166`	`}`
`167`	`167`	```
`168`	`168`
	`169`	`+### Rust`
	`170`	`+`
	`171`	+```rust
	`172`	`+impl Solution {`
	`173`	`+ pub fn merge_arrays(nums1: Vec<Vec<i32>>, nums2: Vec<Vec<i32>>) -> Vec<Vec<i32>> {`
	`174`	`+ let mut cnt = vec![0; 1001];`
	`175`	`+`
	`176`	`+ for x in &nums1 {`
	`177`	`+ cnt[x[0] as usize] += x[1];`
	`178`	`+ }`
	`179`	`+`
	`180`	`+ for x in &nums2 {`
	`181`	`+ cnt[x[0] as usize] += x[1];`
	`182`	`+ }`
	`183`	`+`
	`184`	`+ let mut ans = vec![];`
	`185`	`+ for i in 0..cnt.len() {`
	`186`	`+ if cnt[i] > 0 {`
	`187`	`+ ans.push(vec![i as i32, cnt[i] as i32]);`
	`188`	`+ }`
	`189`	`+ }`
	`190`	`+`
	`191`	`+ ans`
	`192`	`+ }`
	`193`	`+}`
	`194`	+```
	`195`	`+`
`169`	`196`	`### ...`
`170`	`197`
`171`	`198`	```

Lines changed: 22 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,22 @@`
	`1`	`+impl Solution {`
	`2`	`+ pub fn merge_arrays(nums1: Vec<Vec<i32>>, nums2: Vec<Vec<i32>>) -> Vec<Vec<i32>> {`
	`3`	`+ let mut cnt = vec![0; 1001];`
	`4`	`+`
	`5`	`+ for x in &nums1 {`
	`6`	`+ cnt[x[0] as usize] += x[1];`
	`7`	`+ }`
	`8`	`+`
	`9`	`+ for x in &nums2 {`
	`10`	`+ cnt[x[0] as usize] += x[1];`
	`11`	`+ }`
	`12`	`+`
	`13`	`+ let mut ans = vec![];`
	`14`	`+ for i in 0..cnt.len() {`
	`15`	`+ if cnt[i] > 0 {`
	`16`	`+ ans.push(vec![i as i32, cnt[i] as i32]);`
	`17`	`+ }`
	`18`	`+ }`
	`19`	`+`
	`20`	`+ ans`
	`21`	`+ }`
	`22`	`+}`

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