//@"6",@"34",@"56","78"存入数组，并进行排序降序输出结果

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {

@autoreleasepool {

//@"6",@"34",@"56","78"存入数组，并进行排序降序输出结果

NSArray*arr=@[@"6",@"34",@"56",@"78"];

NSComparator str=^(id obj1,id obj2){

int obj=[obj1 intValue];

int objc=[obj2 intValue];

if (obj<objc) {

return NSOrderedDescending;

}else if (obj==objc){

return NSOrderedSame;

}else{

return NSOrderedAscending;

}

};

NSArray *arr1=[arr sortedArrayUsingComparator:str];

for ( id str3 in arr1) {

NSLog(@"%@",str3);

}

NSComparator str2=^(id obj1,id obj2){

int obj=[obj1 intValue];

int objc=[obj2 intValue];

if (obj>objc) {

return NSOrderedDescending;

}else if (obj==objc){

return NSOrderedSame;

}else{

return NSOrderedAscending;

}

};

NSArray *arr2=[arr sortedArrayUsingComparator:str2];

for ( id str4 in arr2) {

NSLog(@"%@",str4);

}

}

return 0;

}