Perl | Math::BigInt->is _ even()方法
原文:https://www . geesforgeks . org/perl-mathbigint-is _ even-method/
**Math::BigInt**Perl 中的模块提供了用任意精度和重载算术运算符表示整数的对象。
**Math::BigInt**模块的**is_even()**方法用于检查存储为**BigInt**对象的数字是否为偶数。
语法:数学:BigInt- >是 _even()
参数:无
如果 BigInt 对象中存储的数字是偶数，则返回: true，否则返回 false。
示例 1: 使用**Math::BigInt->is_even()**方法
#!/usr/bin/perl
# Import Math::BigInt module
use Math::BigInt;
# Value of n
$n = '89132506319263974586';
# Create BigInt object
$x = Math::BigInt->new($n);
# Check if the number stored
# in BigInt object is even or not
$isEven = $x->is_even();
if ($isEven)
{
print "$n is an even number\n";
}
else
{
print "$n is not an even number\n";
}
# Value of n
$n = '98793270075788553683446589224555431';
# Create BigInt object
$x = Math::BigInt->new($n);
# Check if the number stored
# in BigInt object is even or not
$isEven = $x->is_even();
if ($isEven)
{
print "$x is an even number";
}
else
{
print "$x is not an even number";
}
Output:
89132506319263974586 is an even number
98793270075788553683446589224555431 is not an even number
例 2: 使用**Math::BigInt->is_even()**方法检查十六进制数是否为十进制偶数。
#!/usr/bin/perl
# Import Math::BigInt module
use Math::BigInt;
# Hexadecimal string
$hexValue = '0x24CB016EA';
# value of '0x24CB016EA' in
# decimal number system is 9876543210
# Create BigInt object
$x = Math::BigInt->new($hexValue);
# Check whether the Hexadecimal
# number stored as BigInt object
# is an even number or not
# using Math::BigInt->is_even() method
$isEven = $x->is_even();
if($isEven)
{
print "$hexValue is an even number in decimal";
}
else
{
print "$hexValue is not an even number in decimal";
}
Output:
0x24CB016EA is an even number in decimal
例 3: 使用**Math::BigInt->is_even()**方法检查二进制数是否为十进制偶数。
#!/usr/bin/perl
# Import Math::BigInt module
use Math::BigInt;
# Binary string
$binary = '0b1001001100101100000001011011101010';
# 0b1001001100101100000001011011101010
# is 9876543210 in decimal
# Create BigInt object
$x = Math::BigInt->new($binary);
# Check whether the Binary
# number stored as BigInt object
# is an even number or not
# using Math::BigInt->is_even() method
$isEven = $x->is_even();
if($isEven)
{
print "$binary is an even Number in decimal";
}
else
{
print "$binary is not an even number in decimal";
}
Output:
0b1001001100101100000001011011101010 is an even Number in decimal
