解题思路:
注意事项:
参考代码:
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner=new Scanner(System.in);
int n=scanner.nextInt();
int[] a=new int[n+1];
String str="";
int j=n;
int i;
int count=0;
for(i=0;i<=n;i++) {
a[i]=scanner.nextInt();
if(a[i]>0) {
count++;
str+="+";
if(a[i]>1)
str+=a[i]+"x^"+j;
else if(a[i]==1)
str+="x^"+j;
}
else if(a[i]<0) {
count++;
if(a[i]!=-1)
str+=a[i]+"x^"+j;
else if(a[i]==-1)
str+="-"+"x^"+j;
}
if(j==1&&a[i]!=0)
str=str.substring(0,str.lastIndexOf("^1"));
if(j==0&&a[i]!=0)
str=str.substring(0,str.lastIndexOf("x^0"));
j--;
}
if(str.indexOf("+")==0)
str=str.substring(1,str.length());
if(str.lastIndexOf("+")==str.length()-1||str.lastIndexOf("-")==str.length()-1)
str+="1";
if(count==0)
str="0";
System.out.println(str);
}
}
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