POJ1131

问题描述###

不想写了~

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难点###

没什么难点，我爱JAVA！！

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代码实现###

package poj; import java.math.BigDecimal; import java.util.*; public class Poj1131 { public static void main(String[] args) { String s; BigDecimal eight = new BigDecimal(8); Scanner sc = new Scanner(System.in); while(sc.hasNext()) { s = sc.nextLine(); BigDecimal ans = new BigDecimal(0); BigDecimal temp = new BigDecimal(1); for(int i = 2; i < s.length(); i ++) { temp = temp.divide(eight);//tmp = 1/8, 1/64, 1/512... ans = ans.add(new BigDecimal(s.charAt(i) - '0').multiply(temp)); } System.out.println(s + " [8] = " + ans.stripTrailingZeros().toPlainString() + " [10]"); } sc.close(); } }