本文主要是介绍sort by modulus of a complex number,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
描述
复数E包含实部x和虚部y, E=x+yi;E的模为:
输入n(<=1000)和n对(x,y);
按模数升序对复合体进行排序,如果模数相等,则按输入顺序排序。
排序后输出n行of (x_i,y_i,mod_i),保留2个十进制小数。
输入
输入n和n对(x,y);
输出
输出排序后的n行(x,y,mod)。
样例输入
3
2 2
1 1
3 3
样例输出
1.00 1.00 1.41
2.00 2.00 2.83
3.00 3.00 4.24
code1(给struct取小名
#include<stdio.h>
#include<math.h>
#include<stdlib.h>
typedef struct{double x;double y;double mo;int index;
}Complexnum;
int cmp(const void*a,const void *b){const Complexnum *num1=(const Complexnum*)a;const Complexnum *num2=(const Complexnum*)b;if(num1->mo>num2->mo) return 1;if(num1->mo<num2->mo) return -1;if(num1->index>num2->index) return 1;if(num1->index<num2->index) return -1;return 0;
}
int main(){int n;while(scanf("%d",&n)!=EOF){Complexnum *complexnum=(Complexnum *)malloc(n*sizeof(Complexnum));for(int i=0;i<n;i++){scanf("%lf%lf",&complexnum[i].x,&complexnum[i].y);double mo1=sqrt(complexnum[i].x*complexnum[i].x+complexnum[i].y*complexnum[i].y);complexnum[i].mo=mo1;complexnum[i].index=i;}qsort(complexnum,n,sizeof(Complexnum),cmp);for(int i=0;i<n;i++){printf("%.2lf %.2lf %.2lf\n",complexnum[i].x,complexnum[i].y,complexnum[i].mo);}free(complexnum);}return 0;
}
code2(不给struct取小名)
#include<stdio.h>
#include<math.h>
#include<stdlib.h>
typedef struct{double x;double y;double mo;int index;
}Complexnum;
int cmp(const void*a,const void *b){const Complexnum *num1=(const Complexnum*)a;const Complexnum *num2=(const Complexnum*)b;if(num1->mo>num2->mo) return 1;if(num1->mo<num2->mo) return -1;if(num1->index>num2->index) return 1;if(num1->index<num2->index) return -1;return 0;
}
int main(){int n;while(scanf("%d",&n)!=EOF){Complexnum *complexnum=(Complexnum *)malloc(n*sizeof(Complexnum));for(int i=0;i<n;i++){scanf("%lf%lf",&complexnum[i].x,&complexnum[i].y);double mo1=sqrt(complexnum[i].x*complexnum[i].x+complexnum[i].y*complexnum[i].y);complexnum[i].mo=mo1;complexnum[i].index=i;}qsort(complexnum,n,sizeof(Complexnum),cmp);for(int i=0;i<n;i++){printf("%.2lf %.2lf %.2lf\n",complexnum[i].x,complexnum[i].y,complexnum[i].mo);}free(complexnum);}return 0;
}
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