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## Traversal In Binary Tree : ## **Preorder traversal (NLR) :** 1. Visit the root(N) 2. Traverse the left subtree of root in preorder(L) 3. Traverse the right subtree of root in preorder(R) **Inorder Traversal (LNR) :** 1. Traverse the left subtree of root in inorder(L) 2. Visit the root(N) … |
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**Problems 1: Spiral matrix - Advanced** Source of the problem: [Here (not in English)](http://www.spoj.com/PTIT/problems/BCACM11B/) Spiral matrix is formed by filling number 1 in 1st row 1st column, after that, filling with increasing number by clockwise, example: 1 2 3 4 5 16 17 18 19 6 15 24 25 20 … |
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Very early on when attempting to learn programming in C, you often do exercises that read in and print out strings and numbers. Now you might assume that C has a simple function that will get user input, and indeed it does, but there are a couple of gotchas that … |
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