72] Leetcode 1108. Defanging an IP Address Kotlin

 

https://leetcode.com/problems/defanging-an-ip-address/description/

Defanging an IP Address - LeetCode

특정 문자가 나오면 변환해서 리턴하는 문제

class Solution {
    fun defangIPaddr(address: String): String {

        var ans = ""

       // for (d in address)
        for (i in 0 until address.length) {
            if(address[i] == '.') {
                ans += "[.]"

            } else {
                ans += address[i]
            }

        } 

        return ans
    }
    
}

---

 for문 도는 방법이 여러개 있는데 알아놔야겠다

 val str = "Kotlin!"
 
    for (i in 0..str.length-1) {
        println(str[i])
    }
    
    //////////
    
     for (i in 0 until str.length) {
        println(str[i])
    }
    
    ////////////
     for (i in str.indices) {
        println(str[i])
    }
    //////////
    
     for (c in str) {
        println(c)
    }
    ///////////
    
    str.forEach { println(it) }

 

https://www.techiedelight.com/iterate-over-characters-of-a-string-in-kotlin/

Iterate over characters of a string in Kotlin | Techie Delight