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  2. Algorithms
  3. Warmup
  4. Diagonal Difference
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Diagonal Difference

  • jefflima
     + 2 comments

    Really nice one.

    You can actually move up the k -= 1 into the outer loop next to the i++ as:

    int sum1=0,sum2=0;   

for(int i=0, k=size-1; i< size; i++, k--){
    for(int j=0; j< size; j++){
        cin >> matrix[i][j];            
        if(i==j)
         sum1 += matrix[i][j];                        
    }
    sum2 += matrix[i][k];              
}

cout << abs(sum1-sum2);