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feat: add typescript solution to lc problem: No.2437

No.2437.Number of Valid Clock Times

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Original file line number	Diff line number	Diff line change
`@@ -153,7 +153,29 @@ func countTime(time string) int {`
`153`	`153`	`### TypeScript`
`154`	`154`
`155`	`155`	```ts
	`156`	`+function countTime(time: string): number {`
	`157`	`+ let [hh, mm] = time.split(':');`
	`158`	`+ return count(hh, 24) * count(mm, 60);`
	`159`	`+};`
`156`	`160`
	`161`	`+function count(str: string, limit: number): number {`
	`162`	`+ let [a, b] = str.split('').map(d => Number(d));`
	`163`	`+ let ans = 0;`
	`164`	`+ if (isNaN(a) && isNaN(b)) return limit;`
	`165`	`+ if (isNaN(a)) {`
	`166`	`+ for (let i = 0; i <= 9; i++) {`
	`167`	`+ if (i * 10 + b < limit) ans++;`
	`168`	`+ }`
	`169`	`+ return ans;`
	`170`	`+ }`
	`171`	`+ if (isNaN(b)) {`
	`172`	`+ for (let i = 0; i <= 9; i++) {`
	`173`	`+ if (a * 10 + i < limit) ans++;`
	`174`	`+ }`
	`175`	`+ return ans;`
	`176`	`+ }`
	`177`	`+ return 1;`
	`178`	`+}`
`157`	`179`	```
`158`	`180`
`159`	`181`	`### ...`

Lines changed: 22 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -140,7 +140,29 @@ func countTime(time string) int {`
`140`	`140`	`### TypeScript`
`141`	`141`
`142`	`142`	```ts
	`143`	`+function countTime(time: string): number {`
	`144`	`+ let [hh, mm] = time.split(':');`
	`145`	`+ return count(hh, 24) * count(mm, 60);`
	`146`	`+};`
`143`	`147`
	`148`	`+function count(str: string, limit: number): number {`
	`149`	`+ let [a, b] = str.split('').map(d => Number(d));`
	`150`	`+ let ans = 0;`
	`151`	`+ if (isNaN(a) && isNaN(b)) return limit;`
	`152`	`+ if (isNaN(a)) {`
	`153`	`+ for (let i = 0; i <= 9; i++) {`
	`154`	`+ if (i * 10 + b < limit) ans++;`
	`155`	`+ }`
	`156`	`+ return ans;`
	`157`	`+ }`
	`158`	`+ if (isNaN(b)) {`
	`159`	`+ for (let i = 0; i <= 9; i++) {`
	`160`	`+ if (a * 10 + i < limit) ans++;`
	`161`	`+ }`
	`162`	`+ return ans;`
	`163`	`+ }`
	`164`	`+ return 1;`
	`165`	`+}`
`144`	`166`	```
`145`	`167`
`146`	`168`	`### ...`

Lines changed: 23 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,23 @@`
	`1`	`+function countTime(time: string): number {`
	`2`	`+ let [hh, mm] = time.split(':');`
	`3`	`+ return count(hh, 24) * count(mm, 60);`
	`4`	`+};`
	`5`	`+`
	`6`	`+function count(str: string, limit: number): number {`
	`7`	`+ let [a, b] = str.split('').map(d => Number(d));`
	`8`	`+ let ans = 0;`
	`9`	`+ if (isNaN(a) && isNaN(b)) return limit;`
	`10`	`+ if (isNaN(a)) {`
	`11`	`+ for (let i = 0; i <= 9; i++) {`
	`12`	`+ if (i * 10 + b < limit) ans++;`
	`13`	`+ }`
	`14`	`+ return ans;`
	`15`	`+ }`
	`16`	`+ if (isNaN(b)) {`
	`17`	`+ for (let i = 0; i <= 9; i++) {`
	`18`	`+ if (a * 10 + i < limit) ans++;`
	`19`	`+ }`
	`20`	`+ return ans;`
	`21`	`+ }`
	`22`	`+ return 1;`
	`23`	`+}`

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