Commit 529113a

committed

solved: Valid Number

1 parent bf82119 commit 529113aCopy full SHA for 529113a

File tree

+36

-0

lines changed

+36

-0

lines changed

Lines changed: 10 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -505,4 +505,14 @@ void place(`
`505`	`505`	`board[i][j] = '.';`
`506`	`506`	`}`
`507`	`507`	`}`
	`508`	+```
	`509`	`+`
	`510`	`+### Valid number`
	`511`	`+`
	`512`	+```dart
	`513`	`+bool isNumber(String s) {`
	`514`	`+ if (s == "Infinity" \|\| s == "-Infinity" \|\| s == "+Infinity") return false;`
	`515`	`+`
	`516`	`+ return num.tryParse(s) != null;`
	`517`	`+}`
`508`	`518`	```

Lines changed: 26 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,26 @@`
	`1`	`+void main(List<String> args) {`
	`2`	`+ List<String> cases = [`
	`3`	`+ "2",`
	`4`	`+ "0089",`
	`5`	`+ "-0.1",`
	`6`	`+ "+3.14",`
	`7`	`+ "4.",`
	`8`	`+ "-.9",`
	`9`	`+ "2e10",`
	`10`	`+ "-90E3",`
	`11`	`+ "3e+7",`
	`12`	`+ "+6e-1",`
	`13`	`+ "53.5e93",`
	`14`	`+ "-123.456e789",`
	`15`	`+ ];`
	`16`	`+`
	`17`	`+ for (final testcase in cases) {`
	`18`	`+ print(isNumber(testcase));`
	`19`	`+ }`
	`20`	`+}`
	`21`	`+`
	`22`	`+bool isNumber(String s) {`
	`23`	`+ if (s == "Infinity" \|\| s == "-Infinity" \|\| s == "+Infinity") return false;`
	`24`	`+`
	`25`	`+ return num.tryParse(s) != null;`
	`26`	`+}`

Comments

(0)