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- #!/usr/bin/ruby
- func preorder(t) {
- t ? [t[0], __FUNC__(t[1])..., __FUNC__(t[2])...] : [];
- }
- func inorder(t) {
- t ? [__FUNC__(t[1])..., t[0], __FUNC__(t[2])...] : [];
- }
- func postorder(t) {
- t ? [__FUNC__(t[1])..., __FUNC__(t[2])..., t[0]] : [];
- }
- func depth(t) {
- var a = [t];
- var ret = [];
- while (a.len > 0) {
- var v = (a.shift \\ next);
- ret « v[0];
- a += [v[1,2]];
- };
- return ret;
- }
- var x = [1,[2,[4,[7]],[5]],[3,[6,[8],[9]]]];
- say "pre: #{preorder(x)}";
- say "in: #{inorder(x)}";
- say "post: #{postorder(x)}";
- say "depth: #{depth(x)}";
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