42 lines
798 B
Java
42 lines
798 B
Java
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package Course_Codes;
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import java.math.BigInteger;
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public class <EFBFBD><EFBFBD>100<EFBFBD>׳<EFBFBD>0<EFBFBD>ĸ<EFBFBD><EFBFBD><EFBFBD> {
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public static void main(String[] args) {
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int n=10;
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Fun(n);
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Fun2(n);
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}
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public static void Fun(int n) {
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BigInteger a=new BigInteger("1");
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for(int i=1;i<=n;i++) {
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//aΪBigInteger <20><><EFBFBD>ͣ<EFBFBD><CDA3><EFBFBD><EFBFBD>˲<EFBFBD><CBB2><EFBFBD><EFBFBD><EFBFBD>a*=i;
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a=a.multiply(BigInteger.valueOf(i));
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}
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String s=a.toString();//s=100<30><30><EFBFBD><EFBFBD>ֵ
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System.out.println(s);
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int count=0;
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for(int i=s.length()-1;i>=0;i--) {
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if(s.charAt(i)!='0')//<2F>ҵ<EFBFBD><D2B5><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>0<EFBFBD><30><EFBFBD><EFBFBD>
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break;
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count++;//<2F><>¼0<C2BC>ĸ<EFBFBD><C4B8><EFBFBD>
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}
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System.out.println(count);
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}
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//<2F><>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>
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public static void Fun2(int n) {
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int ans=0;
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while(n>0) {
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><31>5<EFBFBD><35><EFBFBD><EFBFBD>1<EFBFBD><31>0<EFBFBD><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD>
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ans=ans+n/5;
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n=n/5;
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}
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System.out.println(ans);
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}
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}
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