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- int pairSum(int[] a, int k) {
- int c=0;
- for(int i=0;i<a.length;i++){
- for(int j=i+1;j<a.length;j++){
- if(a[i]+a[j]==k){
- c=c+1;
- }
- }
- }
- return c;
- }
- int[] a={2, 4, 1, 3, 1, 4, 2, 4, 5, 6, 7};
- int k=6;
- System.out.println(pairSum(a,k));
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