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Partho Biswas
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‎leetcode.com/objective-c/DS_ALGO_PRAC/DS_ALGO_PRAC.xcodeproj/project.pbxproj

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‎leetcode.com/objective-c/DS_ALGO_PRAC/DS_ALGO_PRAC.xcodeproj/project.xcworkspace/contents.xcworkspacedata

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‎leetcode.com/objective-c/DS_ALGO_PRAC/DS_ALGO_PRAC.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>IDEDidComputeMac32BitWarning</key>
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<true/>
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</dict>
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</plist>

‎leetcode.com/objective-c/DS_ALGO_PRAC/DS_ALGO_PRAC/Problems/226_Invert_Binary_Tree.m

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//
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// 226_Invert_Binary_Tree.m
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// DS_ALGO_PRAC
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//
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// Created by Partho Biswas on 6/2/20.
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// Copyright © 2020 Partho Biswas. All rights reserved.
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//
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#import "226_Invert_Binary_Tree.h"
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struct TreeNode {
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int val;
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struct TreeNode *left;
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struct TreeNode *right;
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};
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@implementation _26_Invert_Binary_Tree
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- (struct TreeNode *)invertTree:(struct TreeNode *)root {
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if (!root) {
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return nil;
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}
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struct TreeNode *left = [self invertTree:root->left];
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struct TreeNode *right = [self invertTree:root->right];
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root->left = right;
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root->right = left;
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return root;
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}
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@end

‎leetcode.com/objective-c/DS_ALGO_PRAC/DS_ALGO_PRAC/main.m

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//
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// main.m
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// DS_ALGO_PRAC
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//
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// Created by Partho Biswas on 6/2/20.
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// Copyright © 2020 Partho Biswas. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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int main(int argc, const char * argv[]) {
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@autoreleasepool {
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// insert code here...
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NSLog(@"Hello, World!");
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}
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return 0;
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}

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