2015年360校招笔试题

两道大题，就第一题稍微有点难度，第二题小儿科。
第一题：
给出一个整数，分解素因数，并以计算器显示的数字形式打印出来，乘号用*表示
例如：
输入： 10
输出：
- -
| |
- * -
| |

思路：

质因数分解及代码参考：质因数分解及代码

代码：

import java.util.*;
public class Main {public static void main(String args[]) {Scanner cin = new Scanner(System.in);int num;while (cin.hasNext()) {num = cin.nextInt(); ArrayList<Integer> list = new ArrayList<Integer>();for (int i = 2; i * i < num; ++ i) {while (num % i == 0) {list.add(i);num /= i;}}if (num > 1) list.add(num);for (int i = 0; i < 5; ++ i) {int j = 0;for (; j < list.size() - 1; ++ j) {printNum(i, list.get(j));printFlag(i);}printNum(i, list.get(list.size() - 1));System.out.println();}}}public static void printFlag(int loc) {if (loc == 0) System.out.print(" ");if (loc == 1) System.out.print(" ");if (loc == 2) System.out.print("*");if (loc == 3) System.out.print(" ");if (loc == 4) System.out.print(" ");}public static void printNum(int loc, int num) {if (loc == 0) {if (num == 0) System.out.print(" - ");if (num == 1) System.out.print("   ");if (num == 2) System.out.print(" - ");if (num == 3) System.out.print(" - ");if (num == 4) System.out.print("   ");if (num == 5) System.out.print(" - ");if (num == 6) System.out.print(" - ");if (num == 7) System.out.print(" - ");if (num == 8) System.out.print(" - ");if (num == 9) System.out.print(" - ");}else if (loc == 1) {if (num == 0) System.out.print("| |");if (num == 1) System.out.print("  |");if (num == 2) System.out.print("  |");if (num == 3) System.out.print("  |");if (num == 4) System.out.print("| |");if (num == 5) System.out.print("|  ");if (num == 6) System.out.print("|  ");if (num == 7) System.out.print("  |");if (num == 8) System.out.print("| |");if (num == 9) System.out.print("| |");}else if (loc == 2) {if (num == 0) System.out.print("   ");if (num == 1) System.out.print("   ");if (num == 2) System.out.print(" - ");if (num == 3) System.out.print(" - ");if (num == 4) System.out.print(" - ");if (num == 5) System.out.print(" - ");if (num == 6) System.out.print(" - ");if (num == 7) System.out.print("   ");if (num == 8) System.out.print(" - ");if (num == 9) System.out.print(" - ");}else if (loc == 3) {if (num == 0) System.out.print("| |");if (num == 1) System.out.print("  |");if (num == 2) System.out.print("|  ");if (num == 3) System.out.print("  |");if (num == 4) System.out.print("  |");if (num == 5) System.out.print("  |");if (num == 6) System.out.print("| |");if (num == 7) System.out.print("  |");if (num == 8) System.out.print("| |");if (num == 9) System.out.print("  |");}else if (loc == 4) {if (num == 0) System.out.print(" - ");if (num == 1) System.out.print("   ");if (num == 2) System.out.print(" - ");if (num == 3) System.out.print(" - ");if (num == 4) System.out.print("   ");if (num == 5) System.out.print(" - ");if (num == 6) System.out.print(" - ");if (num == 7) System.out.print("   ");if (num == 8) System.out.print(" - ");if (num == 9) System.out.print(" - ");}}
}

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2015年360校招笔试题

思路：

代码：

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