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oc升序与降序排列数组打赏

admin 11月 12, 2020 0

对数组进行快速升降序排列,话不多说直接上代码

1.升序

NSArray *tMlist = @[@4,@5,@2,@6,@3,@7,@8];
NSArray *tArray = [tMlist sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
     NSNumber *tNumber1 = (NSNumber *)obj1;
     NSNumber *tNumber2 = (NSNumber *)obj2; //升序2，4，。。
     if ([tNumber1 integerValue] < [tNumber2 integerValue]){
          return NSOrderedAscending;
     }else{
          return NSOrderedDescending;
     }
}];

2.降序

NSArray *tMlist = @[@4,@5,@2,@6,@3,@7,@8];
NSArray *tArray = [tMlist sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
     NSNumber *tNumber1 = (NSNumber *)obj1;
     NSNumber *tNumber2 = (NSNumber *)obj2; //降序序8，7，。。
     if ([tNumber1 integerValue] < [tNumber2 integerValue]){
          return NSOrderedDescending;
     }else{
          return NSOrderedAscending;
     }
}];