classSolution {

funmaximumOddBinaryNumber(s:String):String {

val sArr= s.toCharArray()

var left=0

for (iin0 until sArr.size) {

if (sArr[i]=='1') {

sArr[i]= sArr[left].also { sArr[left]= sArr[i] }

left++

}

}

sArr[left-1]= sArr[sArr.lastIndex].also { sArr[sArr.lastIndex]= sArr[left-1] }

return sArr.joinToString("")

}

}

classSolution {

funmaximumOddBinaryNumber(s:String):String {

var count=0

for (cin s) {

if (c=='1') count++

}

return"1".repeat(count-1)+"0".repeat(s.length- count)+"1"

}

}

classSolution {

funmaximumOddBinaryNumber(s:String)= buildString {

var count= s.count { it=='1' }-1

val n= s.length

for (iin0 until n-1) {

if (count>0) {

append("1")

count--

}else {

append("0")

}

}

append("1")

return toString()

}

}