package suanfa;
//插值查找
public class InsertValueSearch {
	
	

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//定义一个连续均匀的数组，这里从1到100
		int[] arr =  new int[100];
		for(int i=0;i<arr.length;i++) {
			arr[i] = i+1;
		}
		System.out.println("index="+insertValueSearch(arr,0,arr.length,5));
	}
	private static int insertValueSearch(int[] arr,int left,int right,int value) {
		//value<arr[0]||value>arr[arr.length-1]，防止越界
		if(left>right||value<arr[0]||value>arr[arr.length-1]) {
			return -1;//-1表示没有找到
		}
		int mid = (left+right)/2;
		int midValue = arr[mid];
		if(value>midValue) {//向右递归
			return insertValueSearch(arr,mid+1,right,value);
		}else if(value<midValue) {//向左递归
			return insertValueSearch(arr,left,mid-1,value); 
			}else {
				return mid;
		}
	}
	

}