NSArray *arr = @[modelA, modelB, modelC, modelD];现在想把满足条件的model放在最前面 比如是modelB满足 则顺序变为modelB, modelA, modelC, modelD
for(int i =0 ; i <arr.count; i++){
ZhuModel *model = arr[i];
if(model.isTest){
[arr removeObjects:model];
[arr insertObject:model atIndex:0];
}
}
