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#include<bits/stdc++.h>
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using namespace std;
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//<2F><>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD>ȫ<EFBFBD><C8AB>Ԫ<EFBFBD><D4AA>
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void prt(int arr[], int end) {
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for (int i = 0; i <= end; ++i) {
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printf("%d", arr[i]);
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}
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printf("\n");
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}
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void perm(int arr[], int len) {
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if (len < 2) return;
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int i, j, temp;
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while(1) {
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>
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prt(arr, len - 1);
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i = j = len - 1;
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//<2F><>ǰ<EFBFBD><C7B0><EFBFBD>ҵ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>С<EFBFBD><D0A1>Ԫ<EFBFBD><D4AA>
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while (i > 0 && arr[i] < arr[i - 1]) --i;
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temp = i;
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if (i == 0) break;
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//<2F>Ⱥ<EFBFBD><C8BA><EFBFBD><EFBFBD>ҵ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>arr[i-1]<5D><><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA>
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while (temp + 1 < len && arr[temp + 1] > arr[i - 1]) ++temp;
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swap(arr[i - 1], arr[temp]); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
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reverse(arr + i, arr + len); //<2F><><EFBFBD><EFBFBD>
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};
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}
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int main()
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{
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int arr[3] = { 3,1,2 };
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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sort(arr, arr + 3);
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//<2F><><EFBFBD><EFBFBD>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD>
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perm(arr,3);
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}
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