解题思路:
注意事项:
参考代码:import java.util.LinkedList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner s=new Scanner(System.in);
int n=s.nextInt();
int[] a=new int[n+1];
for (int i = 0; i <n+1; i++) {
a[i]=s.nextInt();
}
int t=n;
for (int i = 0; i < n; i++) {
if(a[i]==0){
continue;
}
if(t==1){
if(a[i]>0){
if(a[i]==1){
System.out.print("+"+"x");
//System.out.print("+"+a[i]+"x");
}else System.out.print("+"+a[i]+"x");
}else {
if(a[i]==-1){
System.out.print("-"+"x");
//System.out.print("+"+a[i]+"x");
}else System.out.print(a[i]+"x");
}
continue;
}
if(i==0&&a[0]<0){
if(a[i]==-1){
System.out.print("-x^"+t);
}else{
System.out.print(a[i]+"x^"+t);
}
}else {
if(a[i]<0){
if(a[i]==-1){
System.out.print("-x^"+t);
}else{
System.out.print(a[i]+"x^"+t);
}
}else if(i==0){
if(a[i]==1){
System.out.print("x^"+t);
}else{
System.out.print(a[i]+"x^"+t);
}
}else{
if(a[i]==1){
System.out.print("+x^"+t);
}else{
if(a[i]==-1){
System.out.print("-x^"+t);
}else{
System.out.print("+");
System.out.print(a[i]+"x^"+t);
}
}
}
}
t--;
}
if(a[n]==0) return;
if(a[n]>0){
System.out.println("+"+a[n]);
}else{
System.out.println(a[n]);
}
}
}
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