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JZ33 二叉搜索树的后序遍历序列
2022-07-20 21:38:00 【syc596】
JZ33 二叉搜索树的后序遍历序列
二叉搜索树的后序遍历序列_牛客题霸_牛客网 (nowcoder.com)
import java.util.*;
public class Solution {
public boolean recursion(int[] sequence,int left,int right){
if(left>=right){
return true;
}
int root=sequence[right];
int i=left;
while(i<right&&sequence[i]<root){
i++;
}
for(int j=i;j<right;j++){
if(sequence[j]<root){
return false;
}
}
return recursion(sequence,left,i-1)
&&recursion(sequence,i,right-1);
}
public boolean VerifySquenceOfBST(int [] sequence) {
if(sequence==null||sequence.length==0){
return false;
}
return recursion(sequence,0,sequence.length-1);
}
}
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