P5724題目要求

P5724題目鏈接

P5724分析

存一下max和min，max-min就是極差……

P5724AC代碼（Java語言描述）

import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);int num = scanner.nextInt();int max = scanner.nextInt(), min = max;for (int i = 1; i < num; i++) {int temp = scanner.nextInt();if (temp > max) {max = temp;}if (temp < min) {min = temp;}}scanner.close();System.out.println(max - min);} }

P5727題目要求

P5727題目鏈接

P5727分析

按照規矩來唄……都說的很明白了……

P5727AC代碼（Java語言描述）

import java.util.LinkedList; import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);int num = scanner.nextInt();scanner.close();LinkedList<Integer> list = new LinkedList<>();while (num > 1) {list.push(num);if (num % 2 == 0) {num /= 2;} else {num*=3;++num;}}list.push(1);for (int i = 0; i < list.size()-1; i++) {System.out.print(list.get(i) + " ");}System.out.println(list.get(list.size()-1));} }

P5728題目要求

P5728題目鏈接

P5728分析

排列組合一下，按照要求判斷一下就行……

P5728AC代碼（Java語言描述）

import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);int num = Integer.parseInt(scanner.nextLine());int[] chinese_array = new int[num], math_array = new int[num],english_array = new int[num], grade_array = new int[num];for (int i = 0; i < num; i++) {String str = scanner.nextLine();String[] arr = str.split(" ");chinese_array[i] = Integer.parseInt(arr[0]);math_array[i] = Integer.parseInt(arr[1]);english_array[i] = Integer.parseInt(arr[2]);grade_array[i] = chinese_array[i] + math_array[i] + english_array[i];}int counter = 0;for (int i = 0; i < num; i++) {for (int j = i+1; j < num; j++) {if (Math.abs(chinese_array[i]-chinese_array[j]) <= 5 &&Math.abs(math_array[i]-math_array[j]) <= 5 &&Math.abs(english_array[i]-english_array[j]) <= 5 &&Math.abs(grade_array[i]-grade_array[j]) <= 10) {counter++;}}}scanner.close();System.out.println(counter);} }

P5729題目要求

P5729題目鏈接

P5729分析

數據不大，開個三維數組，每次就切一下就行哈哈哈哈哈……

P5729AC代碼（Java語言描述）

import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);byte x = scanner.nextByte(), y = scanner.nextByte(), z = scanner.nextByte(), num = scanner.nextByte();byte[][][] cuboid = new byte[x+1][y+1][z+1];for (byte i = 0; i < num; i++) {byte x1 = scanner.nextByte(), y1 = scanner.nextByte(), z1 = scanner.nextByte();byte x2 = scanner.nextByte(), y2 = scanner.nextByte(), z2 = scanner.nextByte();for (byte j = x1; j <= x2; j++) {for (byte k = y1; k <= y2; k++) {for (byte l = z1; l <= z2; l++) {cuboid[j][k][l] = 1;}}}}scanner.close();int counter = 0;for (byte i = 1; i <= x; i++) {for (byte j = 1; j <= y; j++) {for (byte k = 1; k <= z; k++) {if (cuboid[i][j][k] == 0) {counter++;}}}}System.out.println(counter);} }

總結

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