IN the unordered set ,we used generally value --pair in mapping but to find the subarayy equal to zero ,we just used unordered_map sumset it is true to written like that ,there is not necessary to have a key --value in mapping …
IN the unordered set ,we used generally value --pair in mapping but to find the subarayy equal to zero ,we just used unordered_map sumset it is true to written like that ,there is not necessary to have a key --value in mapping …