将数字变为“1st/2nd/3rd/4th...”这种表示”顺序“的形式

toOrdinal.java

/**
     * 将数字变为“1st/2nd/3rd/4th...”这种表示”顺序“的形式
     */
    public static String toOrdinal(int i) {
        String[] sufixes = new String[] { "th", "st", "nd", "rd", "th", "th", "th", "th", "th",
                "th" };
        switch (i % 100) {
            case 11:
            case 12:
            case 13:
                return i + "th";
            default:
                return i + sufixes[i % 10];

        }
    }