Get The Max Value from an NSArray

-(void)findMax

{

    NSArray *numberArray = [NSArray arrayWithObjects:[NSNumber numberWithInt:10], [NSNumber numberWithInt:20], [NSNumber numberWithInt:1000], nil];

    NSInteger highestNumber;

    NSInteger numberIndex;

    for (NSNumber *theNumber in numberArray)

    {

        if ([theNumber integerValue] > highestNumber) {

            highestNumber = [theNumber integerValue];

            numberIndex = [numberArray indexOfObject:theNumber];

        }

    }

    NSLog(@"Highest number: %i at index: %i", highestNumber, numberIndex);

}

Out Put :

Highest number: 1000 at index: 2


Using KVC

[self setValue:[NSNumber numberWithInt:10] forKey:@"number1"];

[self setValue:[NSNumber numberWithInt:20] forKey:@"number2"];

[self setValue:[NSNumber numberWithInt:1000] forKey:@"number3"];

   

NSArray *numberArray = [NSArray arrayWithObjects:[self valueForKey:@"number1"], [self valueForKey:@"number2"], [self valueForKey:@"number3"], nil];

    

    

    int max = [[numberArray valueForKeyPath:@"@max.intValue"] intValue];

    

   NSLog(@"Highest number: %i",max);

Out Put :

Highest number: 1000