hdu 1170 Balloon Comes
2015-06-01 22:29
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Balloon Comes!
气球来了!Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 22727 Accepted Submission(s): 8577
Problem Description
The contest starts now! How excited it is to see balloons floating around. You, one of the best programmers in HDU,
现在比赛开始!气球升起激动的时刻来了。你作为HDU优秀的编程员之一。
can get a very beautiful balloon if only you have solved the very very very... easy problem.
如果能解决这个非常非常非常难的问题,那么你就可以得到一个美丽的气球。
Give you an operator (+,-,*, / --denoting addition, subtraction, multiplication, division respectively)
你(respectively分别)能用,(addition加),(subtraction减),(multiplication乘),(division除),(denoting 指示)
and two positive integers, your task is to output the result.
两个整正数,你的任务是输出他们的结果。
Is it very easy?
很简单吧?
Come on, guy! PLMM will send you a beautiful Balloon right now!
小子,来吧!漂亮美眉会立刻给你一个么美丽的气球!
Good Luck!
祝你好运!
Input
Input contains multiple test cases. The first line of the input is a single integer T (0<T<1000) which is the number of test cases.
输入包含多个测试用例。输入的第一行是T,T指的是有多少个测试用例。
T test cases follow. Each test case contains a char C (+,-,*, /) and two integers A and B(0<A,B<10000).
然后T行。每一行包含一个字符和两个数字,字符为( + - * / ),A , B(0<A,B<10000)。
Of course, we all know that A and B are operands and C is an operator.
当然,A C B = D,也就是C是运算符,D是A与B运算的答案。
Output
For each case, print the operation result. The result should be rounded to 2 decimal places If and only if it is not an integer.
对于每一个测试用例,输出结果。(小数***)结果应四舍五入小数点后2位(当且仅当它不是一个整数------注意:如果结果不是小数就不要精确)。
Sample Input
4 + 1 2 - 1 2 * 1 2 / 1 2
Sample Output
3 -1 2 0.50
这题没压力啊!!
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int t = sc.nextInt(); while (t-- > 0) { String str = sc.next(); int a = sc.nextInt(); int b = sc.nextInt(); switch (str.charAt(0)) { case '+': str = "" + (a + b); break; case '-': str = "" + (a - b); break; case '*': str = "" + (a * b); break; case '/': if (a / b * b == a) { str = "" + (a / b); } else { str = String.format("%.2f", 1.0 * a / b); } break; default: break; } System.out.println(str); } } }
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