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随笔分类 - java 高精度
摘要：View Code //第七题import java.util.*;class Vehicle{ protected int speed, kind; protected String color; Scanner cin=new Scanner(System.in); public Vehicle(int a){ //不带参数的构造方法 kind=a; System.out.println("构造完成"); } public void setSpeed(int a){ speed=a; } public vo...
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posted @ 2011-09-26 21:00
摘要：View Code import java.util.*;import java.math.*;import java.text.DecimalFormat;public class Main { public static void main(String args[]) { Scanner cin=new Scanner(System.in); double x1,y1,x2,y2; DecimalFormat df = new DecimalFormat("0.00"); while...
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posted @ 2011-09-26 15:07
摘要：View Code class Point{ protected int x, y; // coordinates of the Point public Point(){ //不带参数的构造方法 x=0; y=0; System.out.println( "Point constructor: "+this.toString() ); } public Point(int a,int b){ //带参数的构造方法 x=a; y=b; System.out.println( "Point con...
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posted @ 2011-09-26 14:30
摘要：推出公式；f[0]=1f[1]=1/2*f[0]f[2]=1/4*(f[0]+f[1])f[3]=1/6*(f[0]+f[1]+f[2])f[4]=1/8*(f[0]+f[1]+f[2]+f[3])……JAVA处理View Code import java.util.*;import java.math.*;public class Main { public static void main(String args[]) { Scanner cin=new Scanner(System.in); BigInteger a[],temp,all,fenz...
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posted @ 2011-09-19 21:14
摘要：注意大数a,b是否相等比较不能 if(a==b)//虽然这样写语法没问题要用 .compareTo（）的方法View Code
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posted @ 2011-09-08 22:47
摘要：小数相加 注意1.1+1.9=4结果简单表示.stripTrailingZeros().toPlainString()//去掉大数后面多余的0，并用简单法表示View Code import java.util.*;import java.math.*;public class Main { public static void main(String args[]){ Scanner scan=new Scanner(System.in); while(scan.hasNextBigDecimal()){ BigDecimal a,b; ...
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posted @ 2011-09-08 21:38
摘要：BigInteger 没有sqrt的功能，所以用二分做注意：BigInteger l,r,mid,x=scan.nextBigInteger();//有时会出现PE所以：BigInteger l,r,mid,x； x =scan.nextBigInteger();View Code
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posted @ 2011-09-08 21:00
摘要：计算a^b-b^aView Code import java.util.*;import java.math.*;public class Solution { public static void main(String args[]){ Scanner scan=new Scanner(System.in); int a=scan.nextInt(); int b=scan.nextInt(); BigInteger x =BigInteger.valueOf(a); ...
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posted @ 2011-09-08 18:49
摘要：toPlainString()按一般数学表达式表示toString()按科学型表示replaceAll("^0", "") 如果整数里有零，替换掉View Code import java.util.*;import java.math.*;public class Main { public static void main(String args[]){ Scanner scan=new Scanner(System.in); while(scan.hasNext()) { BigDecimal a=scan.nextB...
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posted @ 2011-09-08 09:40
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