Powershell -按属性和总和对数组对象进行分组

# 准备学生数组
$students = @(
    [PSCustomObject]@{Name = "Alice"; Age = 18; Grade = "A"},
    [PSCustomObject]@{Name = "Bob"; Age = 19; Grade = "B"},
    [PSCustomObject]@{Name = "Charlie"; Age = 17; Grade = "A"},
    [PSCustomObject]@{Name = "David"; Age = 20; Grade = "C"},
    [PSCustomObject]@{Name = "Emily"; Age = 18; Grade = "B"}
)

# 按成绩分组
$groupedStudents = $students | Group-Object -Property Grade

# 访问分组结果
foreach ($group in $groupedStudents) {
    Write-Host "Grade: $($group.Name)"
    Write-Host "Students:"

    foreach ($student in $group.Group) {
        Write-Host "  $($student.Name) (Age: $($student.Age))"
    }

    Write-Host
}

Grade: A
Students:
  Alice (Age: 18)
  Charlie (Age: 17)

Grade: B
Students:
  Bob (Age: 19)
  Emily (Age: 18)

Grade: C
Students:
  David (Age: 20)