Share runnable code, everywhere. 1
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// { autofold
import java.io.*;
import java.lang.annotation.*;
import java.lang.instrument.*;
import java.lang.invoke.*;
import java.lang.management.*;
import java.lang.ref.*;
import java.lang.reflect.*;
import java.math.*;
import java.net.*;
import java.nio.*;
import java.nio.channels.*;
import java.nio.channels.spi.*;
import java.nio.charset.*;
import java.nio.charset.spi.*;
import java.nio.file.*;
import java.nio.file.attribute.*;
import java.nio.file.spi.*;
import java.text.*;
import java.text.spi.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import java.util.concurrent.locks.*;
import java.util.jar.*;
import java.util.logging.*;
import java.util.prefs.*;
import java.util.regex.*;
import java.util.spi.*;
import java.util.zip.*;
//}
public class Main {
public int singleNumber(int[] nums) {
HashMap<Integer, Integer> table = new HashMap<>();
for (int i : nums) {
table.put(i, table.getOrDefault(i, 0) + 1);
}
for (int i : nums) {
if (table.get(i) == 1) {
return i;
}
}
return 0;
}
public static void main (String[] args) {
// Write your code here.
// Click on "RUN" to execute it.
System.out.println("Hello World!");
}
}