IOS Seventh Exam Questions
Last Update:2016-01-08
Source: Internet
Author: User
<span id="Label3"></p><pre><span style="color: #008080;"><span style="color: #008080;">1</span></span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">1. The following is the ID number, the gender of the output id, age</span></span><span style="color: #008080;"><span style="color: #008080;">2</span></span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">nsstring *[email protected];</span></span><span style="color: #008080;"><span style="color: #008080;">3</span></span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;">The last number of <span style="color: #008000;">ID cards is an even number of girls</span> .</span><span style="color: #008080;"><span style="color: #008080;">4</span></span>NSString *idcard=<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">210423198809040427</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;">5</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>Sex1=[[idcard Substringwithrange:nsmakerange (<span style="color: #800080;"><span style="color: #800080;"></span> -</span>,<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">)] [intvalue];</span></span><span style="color: #008080;"><span style="color: #008080;">6</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>((sex1%<span style="color: #800080;"><span style="color: #800080;">2</span></span>)==<span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">){</span></span><span style="color: #008080;"><span style="color: #008080;">7</span></span>NSLog (<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">gender: Female</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">);</span></span><span style="color: #008080;"><span style="color: #008080;">8</span></span>}<span style="color: #0000ff;"><span style="color: #0000ff;">Else</span></span><span style="color: #000000;"><span style="color: #000000;">{</span></span><span style="color: #008080;"><span style="color: #008080;">9</span></span>NSLog (<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">gender: Male</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">);</span></span><span style="color: #008080;"><span style="color: #008080;">Ten</span></span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> one</span> <span style="color: #008080;"><span style="color: #008080;"></span> a</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>Age1=[[idcard Substringwithrange:nsmakerange (<span style="color: #800080;"><span style="color: #800080;">6</span></span>,<span style="color: #800080;"><span style="color: #800080;">4</span></span><span style="color: #000000;"><span style="color: #000000;">)] [intvalue];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>NSDate *date = [nsdate date];<span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;">This is the date of the NSDate type, the year of the year <span style="color: #008000;">to be obtained is placed here;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>Nscalendar *cal =<span style="color: #000000;"><span style="color: #000000;">[nscalendar currentcalendar];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>Nsuinteger unitflags = nscalendarunityear;<span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">what is the element that you want to get the date</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>Nsdatecomponents *d = [cal components:unitflags fromdate:date];<span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;">the <span style="color: #008000;">date element that is to be obtained from date in Unitflags is stored in D of the nsdatecomponents type;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">then you can get the specific date from D</span> .</span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>Nsinteger year =<span style="color: #000000;"><span style="color: #000000;">[d year];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span>Nsuinteger age2=year-age1+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>NSLog (<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">%ld</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">, age2);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">2. Sort the key of the dictionary from z->a, output value in the order of the sorted key, output value as a string</span></span><span style="color: #008080;"><span style="color: #008080;"></span> a</span>Nsdictionary *[email protected]{<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">R</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">e</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> at</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">T</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">e</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">D</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">b</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">S</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">u</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">K</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">a</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">A</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">s</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">O</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span> <span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> in</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">N</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">P</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">B</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">b</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> to</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">J</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">u</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">F</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span> <span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">U</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">T</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">H</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">L</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> *</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">E</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">J</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">Z</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span>:<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">s</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">,</span></span><span style="color: #008080;"><span style="color: #008080;">Panax Notoginseng</span></span> <span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #000000;"><span style="color: #000000;"> };</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">get all key values inside the array</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span>Nsarray *keys=<span style="color: #000000;"><span style="color: #000000;">[dict allKeys];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> a</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">sort a key value within an array (descending order)</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>Nsarray *sortkeys=[keys Sortedarrayusingcomparator:^nscomparisonresult (<span style="color: #0000ff;"><span style="color: #0000ff;">ID</span></span>obj1,<span style="color: #0000ff;"><span style="color: #0000ff;">ID</span></span><span style="color: #000000;"><span style="color: #000000;">Obj2) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #0000ff;"><span style="color: #0000ff;">return</span></span><span style="color: #000000;"><span style="color: #000000;">[obj2 compare:obj1];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #000000;"><span style="color: #000000;"> }];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">output value values based on key value</span></span><span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> for</span>(<span style="color: #0000ff;"><span style="color: #0000ff;">ID</span></span>Key<span style="color: #0000ff;"><span style="color: #0000ff;">inch</span></span><span style="color: #000000;"><span style="color: #000000;">Sortkeys) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">ID</span></span>obj=<span style="color: #000000;"><span style="color: #000000;">[dict objectforkey:key];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>NSLog (<span style="color: #800000;"><span style="color: #800000;">@"</span></span><span style="color: #800000;"><span style="color: #800000;">%@</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">, obj);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>}</pre><p><p></p></p><p><p>IOS Seventh Exam Questions</p></p></span>
