DSTools.m
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//
// DSTools.m
// DreamSleep
//
// Created by peter on 2022/12/6.
//
#import "DSTools.h"
@implementation DSTools
+ (int)versionCompare:(NSString *)first second:(NSString *)second {
NSArray *versions1 = [first componentsSeparatedByString:@"."];
NSArray *versions2 = [second componentsSeparatedByString:@"."];
NSMutableArray *ver1Array = [NSMutableArray arrayWithArray:versions1];
NSMutableArray *ver2Array = [NSMutableArray arrayWithArray:versions2];
// 确定最大数组
NSInteger a = (ver1Array.count > ver2Array.count) ? ver1Array.count : ver2Array.count;
// 补成相同位数数组
if (ver1Array.count < a) {
for (NSInteger j = ver1Array.count; j < a; j++) {
[ver1Array addObject:@"0"];
}
} else {
for (NSInteger j = ver2Array.count; j < a; j++) {
[ver2Array addObject:@"0"];
}
}
// 比较版本号
return [self compareArray1:ver1Array andArray2:ver2Array];;
}
+ (int)compareArray1:(NSMutableArray *)array1 andArray2:(NSMutableArray *)array2 {
for (int i = 0; i < array2.count; i++) {
NSInteger a = [[array1 objectAtIndex:i] integerValue];
NSInteger b = [[array2 objectAtIndex:i] integerValue];
if (a > b) {
// array1大于array2
return 1;
} else if (a < b) {
// array1小于array2
return -1;
}
}
// array1等于array2
return 0;
}
@end