宇视科技2015应届生招聘笔试题

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用JAVA实现了分数的加减法，其中输入的字符串为“a/boc/d“，其中a,b,c,d时一个0-9的整数，o是运算符“+“或者“-”

public class Test1 {public static void main(String[] args) {Scanner in = new Scanner(System.in);String A = in.next();in.close();char[] B = A.toCharArray();int[] C = new int[4];//用于存储abcd的值int ii = 0;for (int i = 0; i < C.length; i++) {C[i] = Integer.parseInt(String.valueOf(B[ii]));ii += 2;}if (C[1] == 0 || C[3] == 0 ) {System.out.println("输入有误，分母不能为0！");System.exit(0);}int temp = 0;if (C[1] != C[3]) {//分母不同temp = C[1] * C[3];C[0] = C[0] * C[3];C[2] = C[2] * C[1];C[1] = temp;C[3] = temp; }if (B[3] == '+') {temp = C[0] + C[2];} else {temp = C[0] - C[2];}int operate = 1;//代表运算后分数的正负号if (temp < 0) {operate = -1;}temp *= operate;/** * 获得分子分母的公约数 */int min = 0;int max = 0;int value = 1;if (temp > C[1]) {max = temp;min = C[1];} else {max = C[1];min = temp;}for (int i = 2; i <= min; i++) {if (min % i == 0 && max % i == 0) {value = i;}}temp /= value;C[1] /= value;temp *= operate;if (temp == 0) {System.out.println(0);} else {System.out.println(String.valueOf(temp) + "/" + String.valueOf(C[1]));}}}