Java中的 BigInteger toString() 方法
BigInteger 类为 toString() 提供了 2 种方法。
- toString(int radix) : Java.math.BigInteger.toString(int radix) 方法以给定的基数返回此 BigInteger 的十进制字符串表示形式。 Radix 参数决定它应该返回字符串的基数(二进制、八进制、十六进制等)。在 toString()的情况下,基数默认为 10。如果基数超出字符.MIN_RADIX 到字符.MAX_RADIX 的范围(含),它将默认为 10。
句法:
public String toString(int radix)
参数:此方法接受一个强制参数基数,它是字符串表示的基数。
返回值:此方法以给定的基数返回此 BigInteger 的十进制字符串表示形式。
例子:
Input: BigInteger1=321456 radix =2 Output: 1001110011110110000 Explanation: BigInteger1.toString(2)=1001110011110110000. when radix is 2 then function will first convert the BigInteger to binary form then it will return String representation of that binary number. Input: BigInteger1=321456 radix=16 Output: 4e7b0 Explanation: BigInteger1.toString()=4e7b0. when radix is 16 then function will first convert the BigInteger to hexadecimal form then it will return String representation of that hexadecimal number.
下面的程序说明了 BigInteger 类的 toString(int radix) 方法:
例 1:当 radix = 2 时,表示二进制形式的字符串。
// Java program to demonstrate // toString(radix) method of BigInteger import java.math.BigInteger; public class GFG { public static void main(String[] args) { // Creating BigInteger object BigInteger b1; b1 = new BigInteger("321456"); // create radix int radix = 2; // apply toString(radix) method String b1String = b1.toString(radix); // print String System.out.println("Binary String of BigInteger " + b1 + " is equal to " + b1String); } }
输出:Binary String of BigInteger 321456 is equal to 1001110011110110000
示例 2:当 radix = 8 表示八进制形式 String
// Java program to demonstrate // toString(radix) method of BigInteger import java.math.BigInteger; public class GFG { public static void main(String[] args) { // Creating BigInteger object BigInteger b1; b1 = new BigInteger("34567876543"); // create radix int radix = 8; // apply toString(radix) method String b1String = b1.toString(radix); // print String System.out.println("Octal String of BigInteger " + b1 + " is equal to " + b1String); } }
输出:Octal String of BigInteger 34567876543 is equal to 401431767677
例 3:当 radix = 16 表示 HexaDecimal 形式的 String
// Java program to demonstrate toString(radix) method of BigInteger import java.math.BigInteger; public class GFG { public static void main(String[] args) { // Creating BigInteger object BigInteger b1; b1 = new BigInteger("8765432123456"); // create radix int radix = 16; // apply toString(radix) method String b1String = b1.toString(radix); // print String System.out.println("Hexadecimal String of BigInteger " + b1 + " is equal to " + b1String); } }
输出:Hexadecimal String of BigInteger 8765432123456 is equal to 7f8dc77d040
- toString() : Java.math.BigInteger.toString() 方法返回这个 BigInteger 的十进制字符串表示。此方法对于将 BigInteger 转换为 String 很有用。在对 BigInteger 应用 toString() 之后,可以对 BigInteger 应用所有字符串操作。
句法:
public String toString()
返回值:此方法返回此 BigInteger 的十进制字符串表示形式。
例子:
Input: BigInteger1=321456 Output: 321456 Explanation: BigInteger1.toString()=321456. The answer is the String representation of BigInteger Input: BigInteger1=59185482345 Output: 59185482345 Explanation: BigInteger1.toString()=59185482345. The answer is the String representation of BigInteger
下面的程序说明了 BigInteger 类的 toString() 方法:
例子:
// Java program to demonstrate toString() method of BigInteger import java.math.BigInteger; public class GFG { public static void main(String[] args) { // Creating 2 BigInteger objects BigInteger b1, b2; b1 = new BigInteger("35152194853456789"); // apply toString() method String b1String = b1.toString(); // print String System.out.println(b1String); b2 = new BigInteger("7654323234565432345676543234567"); // apply toString() method String b2String = b2.toString(); // print String System.out.println(b2String); } }
输出:35152194853456789 7654323234565432345676543234567
参考: https: Java Java)