Created
June 22, 2017 16:52
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hasPathToSum
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| const hasPathToSum = function(node, targetSum) { | |
| // your code here | |
| // let search = (node, val) => { | |
| // if (node.value === null) { | |
| // return; | |
| // } | |
| // if (val === targetSum) { | |
| // return true; | |
| // } | |
| // if (val > targetSum) { | |
| // return; | |
| // } | |
| // val += node.value; | |
| // if(node.left) { | |
| // search(node.left, sum); | |
| // } | |
| // if(node.right) { | |
| // search(node.right, sum); | |
| // } | |
| // if(!node.right && !node.left) { | |
| // return; | |
| // } | |
| // } | |
| // return search(node, 0) === true? true: false ; | |
| // your code here | |
| // let search = (node, val) => { | |
| if (node.value === null) { | |
| return false; | |
| } | |
| if (node.value === targetSum && (node.left === null && node.right === null)) { | |
| return true; | |
| } | |
| return hasPathToSum(node.left, targetSum - node.value) || hasPathToSum(node.right, targetSum - node.value); | |
| // } | |
| }; |
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