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Contents
#import <Foundation/Foundation.h>
#import "HammingExample.h"
@interface Hamming ()
@property (nonatomic,strong,readwrite) NSString *firstStrand;
@property (nonatomic,strong,readwrite) NSString *secondStrand;
@end
@implementation Hamming
+ (NSUInteger)compute:(NSString *)firstStrand against:(NSString *)secondStrand {
Hamming *hamming = [[self alloc] initWithFirstStrand:firstStrand andSecondStrand:secondStrand];
return [hamming distance];
}
- (instancetype)initWithFirstStrand:(NSString *)firstStrand andSecondStrand:(NSString *)secondStrand {
self = [super init];
if (self) {
self.firstStrand = firstStrand;
self.secondStrand = secondStrand;
}
return self;
}
- (NSUInteger)distance {
NSUInteger calculatedDistance = 0;
for (NSUInteger i = 0; i < self.firstStrand.length; i++) {
unichar firstGene = [self.firstStrand characterAtIndex:i];
unichar secondGene = [self.secondStrand characterAtIndex:i];
if ([self mutationBetween:firstGene and:secondGene]) {
calculatedDistance ++;
}
}
return calculatedDistance;
}
- (BOOL)mutationBetween:(unichar)firstGene and:(unichar)secondGene {
return (firstGene != secondGene);
}
@end
Version data entries
396 entries across 396 versions & 1 rubygems