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feat: add solutions to lc problem: No.2942 (#4424)

No.2942.Find Words Containing Character

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Lines changed: 12 additions & 6 deletions

Original file line number	Diff line number	Diff line change
`@@ -139,13 +139,19 @@ func findWordsContaining(words []string, x byte) (ans []int) {`
`139`	`139`
`140`	`140`	```ts
`141`	`141`	`function findWordsContaining(words: string[], x: string): number[] {`
`142`		`- const ans: number[] = [];`
`143`		`- for (let i = 0; i < words.length; ++i) {`
`144`		`- if (words[i].includes(x)) {`
`145`		`- ans.push(i);`
`146`		`- }`
	`142`	`+ return words.flatMap((w, i) => (w.includes(x) ? [i] : []));`
	`143`	`+}`
	`144`	+```
	`145`	`+`
	`146`	`+#### Rust`
	`147`	`+`
	`148`	+```rust
	`149`	`+impl Solution {`
	`150`	`+ pub fn find_words_containing(words: Vec<String>, x: char) -> Vec<i32> {`
	`151`	`+ words.into_iter().enumerate()`
	`152`	`+ .filter_map(\|(i, w)\| w.contains(x).then(\|\| i as i32))`
	`153`	`+ .collect()`
`147`	`154`	`}`
`148`		`- return ans;`
`149`	`155`	`}`
`150`	`156`	```
`151`	`157`

Lines changed: 12 additions & 6 deletions

Original file line number	Diff line number	Diff line change
`@@ -137,13 +137,19 @@ func findWordsContaining(words []string, x byte) (ans []int) {`
`137`	`137`
`138`	`138`	```ts
`139`	`139`	`function findWordsContaining(words: string[], x: string): number[] {`
`140`		`- const ans: number[] = [];`
`141`		`- for (let i = 0; i < words.length; ++i) {`
`142`		`- if (words[i].includes(x)) {`
`143`		`- ans.push(i);`
`144`		`- }`
	`140`	`+ return words.flatMap((w, i) => (w.includes(x) ? [i] : []));`
	`141`	`+}`
	`142`	+```
	`143`	`+`
	`144`	`+#### Rust`
	`145`	`+`
	`146`	+```rust
	`147`	`+impl Solution {`
	`148`	`+ pub fn find_words_containing(words: Vec<String>, x: char) -> Vec<i32> {`
	`149`	`+ words.into_iter().enumerate()`
	`150`	`+ .filter_map(\|(i, w)\| w.contains(x).then(\|\| i as i32))`
	`151`	`+ .collect()`
`145`	`152`	`}`
`146`		`- return ans;`
`147`	`153`	`}`
`148`	`154`	```
`149`	`155`

Lines changed: 9 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,9 @@`
	`1`	`+impl Solution {`
	`2`	`+ pub fn find_words_containing(words: Vec<String>, x: char) -> Vec<i32> {`
	`3`	`+ words`
	`4`	`+ .into_iter()`
	`5`	`+ .enumerate()`
	`6`	`+ .filter_map(\|(i, w)\| w.contains(x).then(\|\| i as i32))`
	`7`	`+ .collect()`
	`8`	`+ }`
	`9`	`+}`

Lines changed: 1 addition & 7 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,9 +1,3 @@`
`1`	`1`	`function findWordsContaining(words: string[], x: string): number[] {`
`2`		`- const ans: number[] = [];`
`3`		`- for (let i = 0; i < words.length; ++i) {`
`4`		`- if (words[i].includes(x)) {`
`5`		`- ans.push(i);`
`6`		`- }`
`7`		`- }`
`8`		`- return ans;`
	`2`	`+ return words.flatMap((w, i) => (w.includes(x) ? [i] : []));`
`9`	`3`	`}`

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