import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
class Ideone
{
{
System.
out.
println("666788899".
replaceAll("(?<=(.))\\1",
"0")); // => 600780090 System.
out.
println("3888667222".
replaceAll("(?<=(.))\\1",
"0")); // => 3800607200 }
}
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