This performance is score 0.

Codility lesson 1: the tape question.

-(int)solution:(NSArray *)A{
    int minimum = 0;
    for(int i=1; i<A.count; i++){
        NSRange range1 = NSMakeRange(0, i);
        NSArray *array1 = [A subarrayWithRange:range1];
        int sum1 = 0;
        for (int j = 0; j<array1.count; j++) {
            NSNumber *number = array1[j];
            sum1 += number.integerValue;
        }
        NSRange range2 = NSMakeRange(i, A.count-i);
        NSArray *array2 = [A subarrayWithRange:range2];
        int sum2 = 0;
        for (int j = 0; j<array2.count; j++) {
            NSNumber *number = array2[j];
            sum2 += number.integerValue;
        }
        int value = ABS(sum1 - sum2);
        if (i == 1) {
            minimum = value;
        }
        minimum = MIN(value, minimum);
    }
    return minimum;
}