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tree-serialize.js
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tree-serialize.js
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function TreeNode(val) {
this.val = val;
this.left = this.right = null;
}
var a = new TreeNode(1);
a.left = new TreeNode(2);
a.right = new TreeNode(3);
a.right.left = new TreeNode(2);
a.right.right = new TreeNode(1);
var serialize = function(root) {
return JSON.stringify(getObj(root));
function getObj (node) {
var obj = {};
if (node === null) return null;
obj.val = node.val;
obj.left = node.left === null ? null : getObj(node.left);
obj.right = node.right === null ? null : getObj(node.right);
return obj;
}
};
var deserialize = function(str) {
var obj = JSON.parse(str);
return makeTree(obj);
function makeTree (node) {
if (node === null) return null;
var tree = new TreeNode(node.val);
tree.left = node.left === null ? null : makeTree(node.left);
tree.right = node.right === null ? null : makeTree(node.right);
return tree;
}
};
//console.log(serialize(a));
console.log(deserialize(serialize(a)));