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feat: add typescript solution to lc problem: No.2047 (doocs#594)

No.2047.Number of Valid Words in a Sentence

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Original file line number	Diff line number	Diff line change
`@@ -85,6 +85,47 @@`
`85`	`85`
`86`	`86`	```
`87`	`87`
	`88`	`+### TypeScript`
	`89`	`+`
	`90`	+```ts
	`91`	`+function countValidWords(sentence: string): number {`
	`92`	`+ let words = sentence.trim().split(/\s+/);`
	`93`	`+ let ans = 0;`
	`94`	`+ for (let word of words) {`
	`95`	`+ if(isValied(word)) {`
	`96`	`+ ans++;`
	`97`	`+ }`
	`98`	`+ }`
	`99`	`+ return ans;`
	`100`	`+};`
	`101`	`+`
	`102`	`+function isValied(str: string): boolean {`
	`103`	`+ let n = str.length;`
	`104`	`+ let hasLine = false;`
	`105`	`+ for (let i = 0; i < n; i++) {`
	`106`	`+ const char = str.charAt(i);`
	`107`	`+ if ((/^[0-9]$/).test(char)) {`
	`108`	`+ return false;`
	`109`	`+ }`
	`110`	`+ if (char == '-') {`
	`111`	`+ if (hasLine) return false;`
	`112`	`+ else {`
	`113`	`+ hasLine = true;`
	`114`	`+ }`
	`115`	`+ let pre = str.charAt(i - 1),`
	`116`	`+ post = str.charAt(i + 1);`
	`117`	`+ if (!(/^[a-z]$/g).test(pre) \|\| !(/^[a-z]$/g).test(post)) {`
	`118`	`+ return false;`
	`119`	`+ }`
	`120`	`+ }`
	`121`	`+ if ((/^[\!\.,円\s]$/).test(char) && i != n - 1) {`
	`122`	`+ return false;`
	`123`	`+ }`
	`124`	`+ }`
	`125`	`+ return true;`
	`126`	`+}`
	`127`	+```
	`128`	`+`
`88`	`129`	`### ...`
`89`	`130`
`90`	`131`	```

Lines changed: 41 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -79,6 +79,47 @@`
`79`	`79`
`80`	`80`	```
`81`	`81`
	`82`	`+### TypeScript`
	`83`	`+`
	`84`	+```ts
	`85`	`+function countValidWords(sentence: string): number {`
	`86`	`+ let words = sentence.trim().split(/\s+/);`
	`87`	`+ let ans = 0;`
	`88`	`+ for (let word of words) {`
	`89`	`+ if(isValied(word)) {`
	`90`	`+ ans++;`
	`91`	`+ }`
	`92`	`+ }`
	`93`	`+ return ans;`
	`94`	`+};`
	`95`	`+`
	`96`	`+function isValied(str: string): boolean {`
	`97`	`+ let n = str.length;`
	`98`	`+ let hasLine = false;`
	`99`	`+ for (let i = 0; i < n; i++) {`
	`100`	`+ const char = str.charAt(i);`
	`101`	`+ if ((/^[0-9]$/).test(char)) {`
	`102`	`+ return false;`
	`103`	`+ }`
	`104`	`+ if (char == '-') {`
	`105`	`+ if (hasLine) return false;`
	`106`	`+ else {`
	`107`	`+ hasLine = true;`
	`108`	`+ }`
	`109`	`+ let pre = str.charAt(i - 1),`
	`110`	`+ post = str.charAt(i + 1);`
	`111`	`+ if (!(/^[a-z]$/g).test(pre) \|\| !(/^[a-z]$/g).test(post)) {`
	`112`	`+ return false;`
	`113`	`+ }`
	`114`	`+ }`
	`115`	`+ if ((/^[\!\.,円\s]$/).test(char) && i != n - 1) {`
	`116`	`+ return false;`
	`117`	`+ }`
	`118`	`+ }`
	`119`	`+ return true;`
	`120`	`+}`
	`121`	+```
	`122`	`+`
`82`	`123`	`### ...`
`83`	`124`
`84`	`125`	```

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Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,37 @@`
	`1`	`+`
	`2`	`+function countValidWords(sentence: string): number {`
	`3`	`+ let words = sentence.trim().split(/\s+/);`
	`4`	`+ let ans = 0;`
	`5`	`+ for (let word of words) {`
	`6`	`+ if(isValied(word)) {`
	`7`	`+ ans++;`
	`8`	`+ }`
	`9`	`+ }`
	`10`	`+ return ans;`
	`11`	`+};`
	`12`	`+`
	`13`	`+function isValied(str: string): boolean {`
	`14`	`+ let n = str.length;`
	`15`	`+ let hasLine = false;`
	`16`	`+ for (let i = 0; i < n; i++) {`
	`17`	`+ const char = str.charAt(i);`
	`18`	`+ if ((/^[0-9]$/).test(char)) {`
	`19`	`+ return false;`
	`20`	`+ }`
	`21`	`+ if (char == '-') {`
	`22`	`+ if (hasLine) return false;`
	`23`	`+ else {`
	`24`	`+ hasLine = true;`
	`25`	`+ }`
	`26`	`+ let pre = str.charAt(i - 1),`
	`27`	`+ post = str.charAt(i + 1);`
	`28`	`+ if (!(/^[a-z]$/g).test(pre) \|\| !(/^[a-z]$/g).test(post)) {`
	`29`	`+ return false;`
	`30`	`+ }`
	`31`	`+ }`
	`32`	`+ if ((/^[\!\.,円\s]$/).test(char) && i != n - 1) {`
	`33`	`+ return false;`
	`34`	`+ }`
	`35`	`+ }`
	`36`	`+ return true;`
	`37`	`+}`

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