kotlin 字符串

Given a string, we have to check whether it has all unique characters or not.

给定一个字符串，我们必须检查它是否具有所有唯一字符。

Example:

例：

    Input:
string = "includehelp"
Output:
false
Input:
string = "abcd"
Output:
true

确定字符串在Kotlin中是否具有所有唯一字符的程序 (Program to determine if a string has all unique characters in Kotlin)

package com.includehelp.basic
import java.util.*
import kotlin.collections.HashSet
//Main Function, entry Point of Program
fun main(args: Array<String>) {
//Input Stream
val sc = Scanner(System.`in`)
//input April20.string value
println("Input String : ")
val str: String = sc.nextLine()
val charHashSet: HashSet<Char> = HashSet<Char>()
var result= false
// iterate loop to check unique char in string
for(i in str.indices){
result = charHashSet.add(str[i])
if(!result) {
break
}
}
println("Unique Char  : $result")
}

Output

输出量

Run 1:
Input String :
includehelp
Unique Char  : false
---
Run 2:
Input String :
abcd pqr
Unique Char  : true
---
Run 3:
Input String :
Hello world!
Unique Char  : false

翻译自: https://www.includehelp.com/kotlin/determine-if-a-string-has-all-unique-characters.aspx

kotlin 字符串