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Update 111_minimum_depth_of_binary_tree.js #5

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Update 111_minimum_depth_of_binary_tree.js #5

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25 changes: 15 additions & 10 deletions leetcode/111_minimum_depth_of_binary_tree.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,17 +6,22 @@ var buildTree = require('./building').buildTree;
* @return {number}
*/
var minDepth = function(root) {
return (function recur(node) {
if (!node) {
return 0;
} else if (node.left && !node.right) {
return recur(node.left) + 1;
} else if (!node.left && node.right) {
return recur(node.right) + 1;
} else {
return Math.min(recur(node.left), recur(node.right)) + 1;

if (!root) {
return 0;
}

var lmin = minDepth(root.left);
var rmin = minDepth(root.right);

if (lmin == 0 && rmin != 0) {
return rmin + 1;
} else if (lmin != 0 && rmin == 0) {
return lmin + 1;
} else {
return Math.min(lmin, rmin) + 1;
}
}(root));

};

var t = buildTree('1,2');
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