26进制转10进制（进制转换）

Chenyi_li / 2023-07-28 / 原文

源自南京银行金融科技提前批笔试

package WritExam;

public class Base26Converter {
    public static int base26ToDecimal(String base26) {
        int result = 0;

        for (int i = 0; i < base26.length(); i++) {
            char c = base26.charAt(i);
            int digit = c-'a'+1;
            result = result*26+digit;
        }

        return result;
    }

    public static void main(String[] args) {
        String base26 = "fsadfes";
        int decimal = base26ToDecimal(base26);
        System.out.println("Base 26: " + base26);
        System.out.println("Decimal: " + decimal);
    }
}

26进制转10进制，转回字母

package WritExam;

public class DecimalToBase26Example {
    public static void main(String[] args) {
        int decimal = 12345;

        StringBuilder result = new StringBuilder();

        String s = fun2(decimal);

        System.out.println("转换后的26进制数：" + s);
    }

    public static String  fun1(int decimal){
        StringBuilder result = new StringBuilder();
        while (decimal > 0) {
            int remainder = decimal % 26;
            char digit = (char) ('a' + remainder);
            result.insert(0, digit);
            decimal /= 26;
        }
        return result.toString();
    }

    public static String  fun2(int decimal){
        StringBuilder result = new StringBuilder();
        while (decimal>0){
            int remainder = decimal%26;
            char digit = (char) ('a'+remainder);
            result.append(digit);
            decimal /= 26;
        }
        return result.reverse().toString();
    }
}