蓝桥杯（3.5）

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import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner sc = new Scanner(System.in);int n = sc.nextInt();int q = sc.nextInt();int[] res = new int[n];for(int i=0;iint m = sc.nextInt();//先找左端点再找右端点int l = 0,r = n-1;while(lint mid = (l+r)/2;if(res[mid]=m) r = mid;else l = mid + 1;}//l和r相等if(res[l] == m) {System.out.print(l+" ");//缩小搜索范围到（左端点到n-1）r = n-1;while(lint mid = (l+r+1)/2;//+1if(res[mid]System.out.println("-1 -1");}}}}public static void main(String[] args) {Scanner sc = new Scanner(System.in);double n = sc.nextDouble();double l = -10000,r = 10000;while((r-l)1e-8) {//保留6位多写两位double mid = (l+r)/2;if((mid*mid*mid) = n)r = mid;//!!else l = mid;}System.out.printf("%.6f",l);}}public static void main(String[] args) throws IOException{BufferedReader br = new BufferedReader(new InputStreamReader(System.in));PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out));String[] s1 = br.readLine().split(" ");int n = Integer.parseInt(s1[0]);int m = Integer.parseInt(s1[1]);int[] res = new int[n+1];String[] s2 = br.readLine().split(" ");for(int i=1;iint z = Integer.parseInt(s3[k++]);int l = 1,r = n;while(lint mid = (l+r)/2;if(res[mid] = z) r = mid;else l = mid + 1;}if(res[l] == z) {System.out.print(l+" ");}else {System.out.print("-1 ");}}}}