pat Have Fun with Numbers
2015-04-19 21:39
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注意。java里面的long只能到19位。题目要求是20位。。天。坑了我好长时间
题目链接点击打开链接
题目链接点击打开链接
import java.util.Scanner; import java.math.*; public class Solution { public static void main(String args[]) { Scanner in=new Scanner(System.in); String input=in.next(); BigDecimal INPUTLONG=new BigDecimal(input); BigDecimal RESULT=INPUTLONG.multiply(new BigDecimal(2)); String strTemp=INPUTLONG.toString(); int lengthInput=strTemp.length(); strTemp=RESULT.toString(); int lengthResult=strTemp.length(); // System.out.printf("%s %s",lengthInput,lengthResult); if(lengthInput!=lengthResult) { System.out.println("No"); System.out.println(RESULT); return; } int numberFlat[]=new int [10]; for(int i=0;i<10;i++) { numberFlat[i]=0; } for(int i=0;i<lengthInput;i++) { numberFlat[(INPUTLONG.remainder(new BigDecimal(10))).intValue()]++; INPUTLONG=INPUTLONG.divide(new BigDecimal(10)); } BigDecimal temp=RESULT; for(int i=0;i<lengthInput;i++) { numberFlat[(temp.remainder(new BigDecimal(10))).intValue()]--; temp=temp.divide(new BigDecimal(10)); } //verify Boolean flag=true; for(int i=0;flag&&i<=9;i++) { if(numberFlat[i]==0) { continue; } else { flag=false; } } if(flag) { System.out.println("Yes"); } else { System.out.println("No"); } System.out.println(RESULT); } }
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