90分代码

if( ( s>>(i-1))&1  == 0 ) continue;
if( ( s>>(j-1))&1  == 0 ) continue;

100分代码

if( ( (s>>(j-1))&1 ) == 0 ) continue;
if( ( (s>>(j-1))&1 ) == 0 ) continue;

……求各位DL这两种的区别在哪里