有十二个长得一样的球，其中一个球的重量与其他球不同．
用一个天平，称三次，去反出那个球，并说明其比其球重还是轻
答:给每个球编号从1至12function resultBALL(){if(1,2,3,4=5,6,7,8){if(1,2,3=9,10,11){if(11>12){return 12轻}else{return 12重}}else if(1,2,3>9,10,11){
if(10=11){return 9轻}else if(10>11){return 11轻}else{return 10轻 }
}else if(1,2,3<9,10,11){
if(10=11){return 9重}else if(10>11){return 10重}else{return 11重 }}
}else(1,2,3,4>5,6,7,8){
if(1,6,7,8=5,9,10,11){if(3=4){return 2重}else if(3>4){return 3重}else{return 4重}}else if(1,6,7,8>5,9,10,11) {if(5=9){return 1重}else{return 5轻}}else if(1,6,7,8<5,9,10,11){if(6=7){return 8轻}else if(6<7){return 6轻}else{return 7轻}}
}else if(1,2,3,4<5,6,7,8){if(1,6,7,8=5,9,10,11){if(3=4){return 2轻}else if(3>4){return 3轻}else{return 4轻}}else if(1,6,7,8>5,9,10,11){if(7=6){return 8重 }else if(7>6){return 7重}else{return 6重}}else if(1,6,7,8<5,9,10,11){if(5=9){return 1轻}else {return 5重}}}}
