Created
July 2, 2019 14:43
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dfs-preorder.js
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| preOrder(result=[]) { | |
| if (!this.left && !this.right) { | |
| return result.push(this.key); | |
| } | |
| result.push(this.key); | |
| if (this.left) { | |
| this.left.preOrder(result); | |
| } | |
| if (this.right) { | |
| this.right.preOrder(result); | |
| } | |
| return result; | |
| } |
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