在Java中总结两个巨大的长

你可以用java.math.BigInteger.它可以存储不可变的任意精度整数.

例如:

public BigInteger sum(Long number1, Long number2) {
    BigInteger bigNumber1 = BigInteger.valueOf(number1);
    BigInteger bigNumber2 = BigInteger.valueOf(number2);
    BigInteger result = bigNumber1.add(bigNumber2);
    return result;
}

在这种情况下,您可以像这样重写此方法:

public static boolean searchSum(ArrayList array, long elem) {

    BigInteger bigElem = BigInteger.valueOf(elem);        
    int left = 0, right = array.size() - 1;

    while (left