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https://github.com/krahets/hello-algo.git
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Translate all code to English (#1836)
* Review the EN heading format. * Fix pythontutor headings. * Fix pythontutor headings. * bug fixes * Fix headings in **/summary.md * Revisit the CN-to-EN translation for Python code using Claude-4.5 * Revisit the CN-to-EN translation for Java code using Claude-4.5 * Revisit the CN-to-EN translation for Cpp code using Claude-4.5. * Fix the dictionary. * Fix cpp code translation for the multipart strings. * Translate Go code to English. * Update workflows to test EN code. * Add EN translation for C. * Add EN translation for CSharp. * Add EN translation for Swift. * Trigger the CI check. * Revert. * Update en/hash_map.md * Add the EN version of Dart code. * Add the EN version of Kotlin code. * Add missing code files. * Add the EN version of JavaScript code. * Add the EN version of TypeScript code. * Fix the workflows. * Add the EN version of Ruby code. * Add the EN version of Rust code. * Update the CI check for the English version code. * Update Python CI check. * Fix cmakelists for en/C code. * Fix Ruby comments
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@@ -10,26 +10,26 @@ import utils.*;
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import java.util.*;
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public class build_tree {
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/* Build binary tree: Divide and conquer */
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/* Build binary tree: divide and conquer */
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static TreeNode dfs(int[] preorder, Map<Integer, Integer> inorderMap, int i, int l, int r) {
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// Terminate when subtree interval is empty
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// Terminate when the subtree interval is empty
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if (r - l < 0)
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return null;
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// Initialize root node
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// Initialize the root node
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TreeNode root = new TreeNode(preorder[i]);
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// Query m to divide left and right subtrees
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// Query m to divide the left and right subtrees
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int m = inorderMap.get(preorder[i]);
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// Subproblem: build left subtree
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// Subproblem: build the left subtree
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root.left = dfs(preorder, inorderMap, i + 1, l, m - 1);
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// Subproblem: build right subtree
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// Subproblem: build the right subtree
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root.right = dfs(preorder, inorderMap, i + 1 + m - l, m + 1, r);
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// Return root node
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// Return the root node
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return root;
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}
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/* Build binary tree */
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static TreeNode buildTree(int[] preorder, int[] inorder) {
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// Initialize hash table, storing in-order elements to indices mapping
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// Initialize hash map, storing the mapping from inorder elements to indices
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Map<Integer, Integer> inorderMap = new HashMap<>();
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for (int i = 0; i < inorder.length; i++) {
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inorderMap.put(inorder[i], i);
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@@ -41,11 +41,11 @@ public class build_tree {
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public static void main(String[] args) {
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int[] preorder = { 3, 9, 2, 1, 7 };
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int[] inorder = { 9, 3, 1, 2, 7 };
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System.out.println("Pre-order traversal = " + Arrays.toString(preorder));
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System.out.println("In-order traversal = " + Arrays.toString(inorder));
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System.out.println("Preorder traversal = " + Arrays.toString(preorder));
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System.out.println("Inorder traversal = " + Arrays.toString(inorder));
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TreeNode root = buildTree(preorder, inorder);
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System.out.println("The built binary tree is:");
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System.out.println("The constructed binary tree is:");
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PrintUtil.printTree(root);
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}
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}
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