POJ 1001

标签：poj

Description

Input

Output

Sample Input

95.123 12
0.4321 20
5.1234 15
6.7592  9
98.999 10
1.0100 12

Sample Output

548815620517731830194541.899025343415715973535967221869852721
.00000005148554641076956121994511276767154838481760200726351203835429763013462401
43992025569.928573701266488041146654993318703707511666295476720493953024
29448126.764121021618164430206909037173276672
90429072743629540498.107596019456651774561044010001
1.126825030131969720661201


import java.math.BigDecimal;
import java.util.Scanner;

/**
 * 
 * @author bear
 *
 *         stripTrailingZeros()：如果小数点后面都是0的话，则把小数点和后面的0都去掉；
 *         toPlainString()是什么样子的小数就显示什么样子，toString()将小数用科学计数法表示。
 */

public class Poj1001 {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		while (sc.hasNext()) {
			String input = sc.nextLine();
			String rStr = input.substring(0, 6);
			String n = input.substring(7).trim();

			BigDecimal r = new BigDecimal(rStr);
			//pow求幂
			BigDecimal result = r.pow(Integer.valueOf(n));
			//抹零+普通字符串
			String resultStr = result.stripTrailingZeros().toPlainString();
			if (resultStr.startsWith("0.")) {
				resultStr = resultStr.substring(1);
			}

			System.out.println(resultStr);
		}

	}
}

POJ 1001

标签：poj

原文地址：http://blog.csdn.net/bear_huangzhen/article/details/45022177