贝壳9.3前两题,后两题不会,求大佬指点
第一题相同长度木棒的个数
import java.util.Scanner; public class demo01 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int[] array = new int[n]; for (int i = 0; i <n ; i++) { array[i] = sc.nextInt(); } int[] array1 = new int[n]; for (int i = 0; i <n ; i++) { if(array[i] % 2 ==0){ array1[i] = array[i] /2 ; }else { array1[i] = (array[i]+1)/2; } } for (int i = 0; i <n ; i++) { System.out.println(array1[i]); } } }d第二题 将括号序列转化为一个常规括号序列
import java.util.Scanner; import java.util.Stack; public class Main02 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int[] nums = new int[n]; String[] s = new String[n]; for (int i = 0; i <n ; i++) { nums[i] = sc.nextInt(); sc.nextLine(); s[i] = sc.nextLine(); } for (int i = 0; i <n ; i++) { System.out.println(result(nums[i],s[i])); } } public static int result(int length,String s){ if(length==0) return 0; char[] c = s.toCharArray(); Stack<Character> stack = new Stack<Character>(); for (int i = 0; i <length ; i++) { if (c[i]=='('){ stack.push('('); }else if(stack.isEmpty()) { continue; }else { stack.pop(); } } return stack.size(); } }d第三题 得到物品的总价值数
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第四题 最佳配置的矩阵质量
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