iOS （两行代码实现）浮点数保留两位小数且末尾0不展示

+ (NSString *)praiseStrFormat:(NSUInteger) number {
    NSString *str = @"";
    if (number == 0) {
        str = @"赞";
    } else if (number>0 && number<=10000) {
        str = @(number).stringValue;
    } else {
//        保留两位小数
        str = [NSString stringWithFormat:@"%.2f",(number/10000.0)];
//        去除末尾0
        str = [NSString stringWithFormat:@"%@w",@(str.floatValue)];
    }
    return str;
}