CareerCup

We don't need even negation
a[0] = 0
a[1] = 0
lmao....

// in C (not works in Java)

for (i = 0 ; i < 2 ; i==)
array[i] = array[i]? !array[i] : array[i];

// is it "using only negation operator??

in first case it will be (0&~1),second case (~1&0),third case (~1&~1)

for(int i = 0; i < arr.length; i++)
  arr[i] -= arr[i];

question seems to be incomplete for me .. is the question asking for using only negation operator and dont use any other operator to achieve ( 0,0) ..

cant we used if statement also ?

b[0]= ~a[0] X a[0]
b[1]= ~a[1] X a[1]

You said to use strictly the negation operator, but you used the ternary operator: " ? : "