first init

array/1binary search/27remove_target/kotlin/App.kt

@@ -0,0 +1,49 @@
+/*
+ * 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")
+    }
+}
+