[数值计算] 批处理怎样取出一组变量中数值最大和最小的变量名？

chouxia

set num0=0&set num1=0&set num4=0&set num6=0&set num8=0&set num10=0&set num12=0
变量赋值
现在需要比较变量值的大小，取出最大和最小的变量名。（如果数值一致，输出【num数字】中数字最大和最小的那个）
哪位高人给段代码。谢谢

ivor

笨方法

@echo off & setlocal ENABLEDELAYEDEXPANSION
rem 初始化
set num0=%random%&set num1=%random%&set num4=%random%&set num6=%random%&set num8=%random%&set num10=%random%&set num12=%random%
set maxValue=%num0% &set minValue=%num0% 

for /f "tokens=1,2 delims==" %%a in ('set num ^| findstr "num[0-9]"') do (
	echo %%b
	if %%b gtr !maxValue! set maxValue=%%b
	if %%b lss !minValue! set minValue=%%b
)
echo 最小值：%minValue%最大值：%maxValue%
pause
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chouxia

回复 2# ivor


    set num ^| findstr "num[0-9]"
这行代码没理解。
能解释下吗

523066680

改自二楼代码，增加值相同时对变量名的排序。

@echo off & setlocal ENABLEDELAYEDEXPANSION
set mask=##########
set num0=1&set num1=5&set num4=0&set num6=0&set num8=0&set num10=1&set num12=5&set num13=1
set maxValue=%num0% &set minValue=%num0% 

rem sort value first
for /f "tokens=1,2 delims=num=" %%a in ('set num ^| findstr "num[0-9]"') do (
    set foo=!mask!%%a
    set bar=!mask!%%b
    set order_!bar:~-10!_!foo:~-10!=1
)

rem %%a = value, %%b = itemNO.
for /f "tokens=1,2 delims=order=_" %%a in ('set order') do (
    if defined min (set max=%%b) else (set min=%%b)
)

echo the minimal item: num%min:#=%, value = !num%min:#=%!
echo the maximum item: num%max:#=%, value = !num%max:#=%!
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the minimal item: num4, value = 0
the maximum item: num12, value = 5
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523066680

非批，语法糖

my %hash = (0=>1, 1=>5, 4=>0, 6=>0, 8=>0, 10=>1, 12=>5, 13=>1);
my @idx = sort { $hash{$a} <=> $hash{$b} || $a <=> $b } ( keys %hash );
grep { printf "hash[%2d] = %d\n", $_, $hash{$_} } @idx;
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hash[ 4] = 0
hash[ 6] = 0
hash[ 8] = 0
hash[ 0] = 1
hash[10] = 1
hash[13] = 1
hash[ 1] = 5
hash[12] = 5
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xczxczxcz

没有写PS 不科学。补一个：

$VARIABLE = @(
	[PSCustomObject] @{ NAME = 'VAR1'; NUM= 1 }
	[PSCustomObject] @{ NAME = 'VAR2'; NUM= 2 }
	[PSCustomObject] @{ NAME = 'VAR3'; NUM= 20 }
	[PSCustomObject] @{ NAME = 'VAR7'; NUM= 20 }
	[PSCustomObject] @{ NAME = 'VAR8'; NUM= 20 }
	[PSCustomObject] @{ NAME = 'VAR10'; NUM= 23 }
	[PSCustomObject] @{ NAME = 'VAR9'; NUM= 20 }
	[PSCustomObject] @{ NAME = 'VAR4'; NUM= 12 }
	[PSCustomObject] @{ NAME = 'VAR5'; NUM= 23 }
	[PSCustomObject] @{ NAME = 'VAR6'; NUM= 12 }
);
$MIN_NAME = ( $VARIABLE | sort NUM | select -first 1 ).NAME;
$MIN_VALUE = ( $VARIABLE | sort NUM | select -first 1 ).NUM;
$MAX_NAME = ( $VARIABLE | sort NUM | select -LAST 1 ).NAME;
$MAX_VALUE = ( $VARIABLE | sort NUM | select -LAST 1 ).NUM;
"最大值:{0:0}={1:0}; 最小值:{2:0}={3:0}" -f $MAX_NAME,$MAX_VALUE,$MIN_NAME,$MIN_VALUE;
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