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- Vamsi July 09, 2014#include <algorithm> #include <vector> using namespace std; struct node { int val; node *left; node *right; }; void insert(node **root, int temp) { if(*root == NULL) { (*root) = new node; (*root) -> val = temp; (*root) -> left = NULL; (*root) -> right = NULL; } else if((*root) -> val > temp) insert(&(*root)->left, temp); else insert(&(*root)->right, temp); } void inorder(node *root, vector<int> &v) { if(root != NULL) { inorder(root->left, v); v.push_back(root->val); inorder(root->right, v); } } int main() { int n; cin >> n; struct node *root = NULL, *ptr = NULL; int a[100]; for(int i=0; i<n; i++) { int temp; cin >> temp; a[i] = temp; insert(&root, temp); } vector<int>v; inorder(root, v); vector<int>::iterator it = v.begin(); for(int j=0; j<n; j++) { it = find(v.begin(), v.end(), a[j]); if( it == v.end()-1) { a[j] = -1; break; } it++; a[j] = *it; } for(int k=0; k<n; k++) cout << a[k] << " "; return 0; }