/*
 * This Kotlin source file was generated by the Gradle 'init' task.
 */
package binarySearch

class Solution {
    fun removeElement(nums: IntArray, target: Int): Int {
        var fast_index :Int = 0
        var slow_index :Int = 0
        while (fast_index < nums.size) {
            if (nums[fast_index] != target) {
                nums[slow_index] = nums[fast_index]
                slow_index++
            }
            fast_index++
        }
        return slow_index

    }
}

// 测试用例
fun main() {
    val nums = intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8)
    
    println("请输入要剔除的数字:")
    val input = readLine()
    
    // 验证输入有效性
    if (input.isNullOrBlank()) {
        println("错误：未输入任何内容")
        return
    }
    
    val target = input.toIntOrNull() ?: run {
        println("错误：请输入有效的整数")
        return
    }
    
    val solution = Solution()
    val result = solution.removeElement(nums, target  )
    if (result == -1){
        println("不存在$target")
    }
    else{
        println("删除后数组长度: $result")
    }
}