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How to traverse

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Join Date: Oct 2008

Posts: 37

Reputation: l_03 has a little shameless behaviour in the past

Solved Threads: 0

l_03

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How to traverse

Feb 23rd, 2009

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
 
public String preOrder(int nodeIndex) {
if(nodeIndex>nodeArray.length) {
return(null);
} else if(nodeArray[nodeIndex].isLeaf(nodeArray.length-1)) {
return(nodeArray[nodeIndex].toString());
} else {
return(nodeArray[nodeIndex].toString()+" "+preOrder(nodeArray[nodeIndex].leftChild)+" "+preOrder(nodeArray[nodeIndex].rightChild));
}
public String preOrder(int nodeIndex) {
if(nodeIndex>nodeArray.length) {
return(null);
} else if(nodeArray[nodeIndex].isLeaf(nodeArray.length-1)) {
return(nodeArray[nodeIndex].toString());
} else {
return(nodeArray[nodeIndex].toString()+" "+preOrder(nodeArray[nodeIndex].leftChild)+" "+preOrder(nodeArray[nodeIndex].rightChild));
}

I am really stack with it. I dont how to output the numbers i input. If i input: 1 2 3 4 5 6, it only outputs 1 2 3. Please help me, I really need your help. Thank you in advance. We have to use arrays.
}