Commitfa01469

piggy1991

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1 parent6e8527d commitfa01469Copy full SHA for fa01469

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Lines changed: 31 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -3,6 +3,37 @@`
`3`	`3`	`importjava.util.Stack;`
`4`	`4`
`5`	`5`	`publicclassIsValid {`
	`6`	`+publicbooleanisValid1(Strings) {`
	`7`	`+if (s ==null \|\|s.length() ==0) {`
	`8`	`+returntrue;`
	`9`	`+ }`
	`10`	`+`
	`11`	`+Stack<Character>stack =newStack<Character>();`
	`12`	`+intlen =s.length();`
	`13`	`+for (inti =0;i <len;i++) {`
	`14`	`+charc =s.charAt(i);`
	`15`	`+if (stack.isEmpty()) {`
	`16`	`+if (c ==']' \|\|c ==')' \|\|c =='}') {`
	`17`	`+returnfalse;`
	`18`	`+ }`
	`19`	`+stack.push(c);`
	`20`	`+continue;`
	`21`	`+ }`
	`22`	`+`
	`23`	`+if (c ==')' &&stack.peek() =='('`
	`24`	`+ \|\|c ==']' &&stack.peek() =='['`
	`25`	`+ \|\|c =='}' &&stack.peek() =='{'`
	`26`	`+ ) {`
	`27`	`+stack.pop();`
	`28`	`+ }elseif (c =='(' \|\|c =='[' \|\|c =='{') {`
	`29`	`+stack.push(c);`
	`30`	`+ }else {`
	`31`	`+returnfalse;`
	`32`	`+ }`
	`33`	`+ }`
	`34`	`+`
	`35`	`+returnstack.isEmpty();`
	`36`	`+ }`
`6`	`37`	`publicbooleanisValid(Strings) {`
`7`	`38`	`if (s ==null) {`
`8`	`39`	`returnfalse;`

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