Commitff610c9

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another recursive solution

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+26

-3

lines changed

+26

-3

lines changed

Lines changed: 26 additions & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -16,21 +16,44 @@`
`16`	`16`	`varflatten=function(root){`
`17`	`17`	`varstack=[];`
`18`	`18`	`varp=root;`
`19`		`-`
	`19`	`+`
`20`	`20`	`while(p!==null\|\|stack.length!==0){`
`21`	`21`	`if(p.right!==null){`
`22`	`22`	`stack.push(p.right);`
`23`	`23`	`}`
`24`		`-`
	`24`	`+`
`25`	`25`	`if(p.left!==null){// [!!!]point of confusing, if null then pop stack`
`26`	`26`	`p.right=p.left;`
`27`	`27`	`p.left=null;`
`28`	`28`	`}elseif(stack.length!==0){`
`29`	`29`	`varnode=stack.pop();`
`30`	`30`	`p.right=node;`
`31`	`31`	`}`
`32`		`-`
	`32`	`+`
`33`	`33`	`p=p.right;`
`34`	`34`	`}`
`35`	`35`	`};`
`36`	`36`
	`37`	`+// Recursive solution`
	`38`	`+`
	`39`	`+varflatten=function(root){`
	`40`	`+if(root===null\|\|(root.left===null&&root.right===null)){`
	`41`	`+return;`
	`42`	`+}`
	`43`	`+`
	`44`	`+varrootLeft=root.left;`
	`45`	`+varrootRight=root.right;`
	`46`	`+root.left=null;`
	`47`	`+root.right=null;`
	`48`	`+`
	`49`	`+flatten(rootLeft);`
	`50`	`+flatten(rootRight);`
	`51`	`+`
	`52`	`+root.right=rootLeft;`
	`53`	`+`
	`54`	`+varaux=root;`
	`55`	`+while(aux!==null&&aux.right!==null){`
	`56`	`+aux=aux.right;`
	`57`	`+}`
	`58`	`+aux.right=rootRight;`
	`59`	`+};`

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