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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. void create(double *&x,int n){
  6. 	x=new double[n]();
  7. }
  8. void enter(double *x,int n){
  9. 	for(int i=0;i<n;++i){
  10. 		cin>>x[i];
  11. 	}
  12. }
  13. void print(double *x,int n){
  14. 	for(int i=0;i<n;++i){
  15. 		cout<<x[i]<<" ";
  16. 	}
  17. }
  18. void add(double *x,double *y,double *z,int n){
  19. 	for(int i=0;i<n;++i){
  20. 		z[i]=x[i]+y[i];
  21. 	}
  22. }
  23. void subtract(double *x,double *y,double *z,int n){
  24. 	for(int i=0;i<n;++i){
  25. 		z[i]=x[i]-y[i];
  26. 	}
  27. }
  28. double length(double *x,int n){
  29. 	double sum=0;
  30. 	for(int i=0;i<n;++i){
  31. 	sum+=x[i]*x[i];
  32. }
  33. return(sqrt(sum));
  34. }
  35. void normalize(double *x,double *z,int n){
  36. 	double sum=0;
  37. 	for(int i=0;i<n;++i){
  38. 	sum+=x[i]*x[i];
  39. }
  40. double length=sqrt(sum);
  41. if(length==0)return;
  42. 	for(int i=0;i<n;++i){
  43. 		z[i]=x[i]/length;
  44. 	}
  45. }
  46. double dot(double *x,double *y,int n){
  47. 	double sum=0;
  48. 	for(int i=0;i<n;++i){
  49. 		sum+=(x[i]*y[i]);
  50. 	}
  51. 	return(sum);
  52. }
  53. double mean(double *x,int n){
  54. 	if(n==0)return 0;
  55. 	double sum=0;
  56. 	for(int i=0;i<n;++i){
  57. 		sum+=x[i];
  58. 	}
  59. 	return(sum/n);
  60. }
  61. double distance(double *x,double *y,int n){
  62. 	double sum=0;
  63. 	for(int i=0;i<n;++i){
  64. 		sum+=(x[i]-y[i])*(x[i]-y[i]);
  65. 	}
  66. 	return(sqrt(sum));
  67. }
  68.  
  69. int main() {
  70. double *x,*y,*z;
  71. int n;
  72. cin>>n;
  73. create(x,n);
  74. enter(x,n);
  75. create(y,n);
  76. enter(y,n);
  77. create(z,n);
  78. cout<<"a = ( ";
  79. print(x,n);
  80. cout<<")"<<endl;
  81. cout<<"b = ( ";
  82. print(y,n);
  83. cout<<")"<<endl;
  84. add(x,y,z,n);
  85. cout<<"a + b = ( ";
  86. print(z,n);
  87. cout<<")"<<endl;
  88. subtract(x,y,z,n);
  89. cout<<"a - b = ( ";
  90. print(z,n);
  91. cout<<")"<<endl;
  92. cout<<"|a| = "<<length(x,n)<<endl;
  93. normalize(x,z,n);
  94. cout<<"normalized a = ( ";
  95. print(z,n);
  96. cout<<")"<<endl;
  97. cout<<"a * b = "<<dot(x,y,n)<<endl;
  98. cout<<"mean of a = "<<mean(x,n)<<endl;
  99. cout<<"distance (a , b) = "<<distance(x,y,n)<<endl;
  100. 	return 0;
  101. }
Success #stdin #stdout 0.01s 5308KB
comments (?)
stdin 
10
0 2 4 6 8 10 12 14 16 18
3 6 9 12 15 18 21 24 27 30
stdout 
a = ( 0 2 4 6 8 10 12 14 16 18 )
b = ( 3 6 9 12 15 18 21 24 27 30 )
a + b = ( 3 8 13 18 23 28 33 38 43 48 )
a - b = ( -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 )
|a| = 33.7639
normalized a = ( 0 0.0592349 0.11847 0.177705 0.23694 0.296174 0.355409 0.414644 0.473879 0.533114 )
a * b = 1980
mean of a = 9
distance (a , b) = 25.3969
https://ideone.com/h8z6U0
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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