- (BOOL)judgeDivisibleWithFirstNumber:(CGFloat)firstNumber andSecondNumber:(CGFloat)secondNumber {

    // 默认记录为整除

    BOOLisDivisible =YES;

    if(secondNumber == 0) {

        returnNO;

    }

    CGFloatresult = firstNumber / secondNumber;

    NSString * resultStr = [NSString stringWithFormat:@"%f", result];

    NSRangerange = [resultStrrangeOfString:@"."];

    NSString* subStr = [resultStrsubstringFromIndex:range.location+ 1];

    for(NSIntegerindex = 0; index < subStr.length; index ++) {

        unicharch = [subStrcharacterAtIndex:index];

        // 后面的字符中只要有一个不为0，就可判定不能整除，跳出循环

        if('0' != ch) {

            //            NSLog(@"不能整除");

            isDivisible =NO;

            break;

        }

    }

    // NSLog(@"可以整除");

    returnisDivisible;

}