/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
int L = str.length();
int N = 3;
int pow = 1;
for (int i = 0; i < N; i++)
pow *= L; // L^N
for (int i = 0; i < pow; i++)
{
int tmp = i;
for (int k = 0; k < N; k++)
{
res = str.charAt(tmp % L) + res; //integer modulo
tmp = tmp / L;
}
}
}
}
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