went

第一种

$d = @(
	'00:04:30'
	'00:05:25'
	'00:05:20'
)
$h = $m = $s = 0
$d | foreach {
    $arr = $_ -split ':'
    $s += [int]$arr[2]
    $m += [System.Math]::Floor($s / 60); $s = $s % 60
    $m += [int]$arr[1]
    $h += [System.Math]::Floor($m / 60); $m = $m % 60
    $h += [int]$arr[0]
}
'{0}:{1}:{2}' -f $h,$m,$s
复制代码

第二种

$d = @(
	'00:04:30'
	'00:05:25'
	'00:05:20'
)
$t = [timespan]::Zero
$d | foreach { $t += [timespan]$_ }
'{0}:{1}:{2}' -f $t.Hours,$t.Minutes,$t.Seconds
复制代码

went

占位符格式化{0:00}