Please help me with this problem , Logic seems to be correct . Its failing for two /four hidden test case .
thanks in advance !
I think so, you are not checking case when it is possible that i+1 is equal to j or vise-versa at that point you can’t because you are comparing the same position value and swapping.
if(i+1==j){
flag=1;
break;
}
I hope I made it clear.I did this change in your code it run.You may check.
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Thanks for pointing it out. 