Kotlin 文字列の先頭をパディングしたい padStart

Kotlinでゼロ埋め（zero padding, zero-fill）したい

padStart - Kotlin Programming Language

val padWithSpace = "125".padStart(5)
println("'$padWithSpace'") // '  125'

val padWithChar = "a".padStart(5, '.')
println("'$padWithChar'") // '....a'

// string is returned as is, when its length is greater than the specified
val noPadding = "abcde".padStart(3)
println("'$noPadding'") // 'abcde'