public static int makeUpComputer(int[] computers, int[] memory) {
        Arrays.sort(computers);
        Arrays.sort(memory);
        int index = 0;
        int count = 0;
        for (int i = 0; i < computers.length; i++) {
            // i：当前考察的电脑索引
            for (int j = index; j < memory.length; j++) {
                // j：当前内存条索引
                if (memory[j] >= computers[i]) {
                    index = j+1;
                    count++;
                    break;
                }
            }

        }

        return count;
}