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  1.     #include<stdio.h>
  2.     int cmp(const void *a,const void *b)
  3. {
  4. return *(int *)a-*(int *)b;
  5. }
  6.   /*  void bubble(int a[],int b){// sorting here
  7.     int c,d,e;
  8.     for(c=0;c<b;c++){
  9.     for(d=0;d<b-c;d++){
  10.     if(a[d]>a[d+1]){
  11.     e=a[d];
  12.     a[d]=a[d+1];
  13.     a[d+1]=e;
  14.     }
  15.     }
  16.     }
  17.     }*/
  18.     int main(){
  19.     int a[100],b[100],d,e,f,g,m,n;
  20.     scanf("%d",&d);
  21.     while(d--){//testcases
  22.     scanf("%d",&f);
  23.     for(e=0;e<f;e++){// input array 1
  24.     scanf("%d",&a[e]);
  25.     }
  26.     //bubble(a,f);
  27.     for(e=0;e<f;e++)// input array 2
  28.     scanf("%d",&b[e]);
  29.     ///bubble(b,f);
  30.  
  31.      qsort(a,f,sizeof(int),cmp);
  32. qsort(b,f,sizeof(int),cmp);
  33.    /* for(e=0;e<f;e++)
  34.     {
  35.         printf("%d %d\n",a[e],b[e]);
  36.     }*/
  37.     g=0;// logic starts here
  38.     m=0;
  39.     n=0;
  40.     while(n<f){
  41.     if(a[m]<=b[n]){
  42.     g++;
  43.     m++;
  44.     n++;
  45.     }
  46.     else
  47.     n++;
  48.     }
  49.  
  50.     printf("%d\n",g);
  51.     }
  52.  
  53.     return 0;
  54.     }
  55.  
Success #stdin #stdout 0s 1792KB
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stdin
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2
3
10 30 20
30 10 20
5
9 7 16 4 8
8 3 14 10 10
stdout
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3
4
https://ideone.com/Tew1bn
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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