Update Pathsum.cpp - #143
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The NULL check at the beginning of hasPathSum() was removed because the checkPathSum() function already handles the NULL case. The and was replaced with && in if (root->left == NULL && root->right == NULL) to ensure correct C++ syntax.
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The NULL check at the beginning of hasPathSum() was removed because the checkPathSum() function already handles the NULL case. The and was replaced with && in if (root->left == NULL && root->right == NULL) to ensure correct C++ syntax.