C Program to Delete duplicate elements from an array

Data Structure Array (Article) Array (Program)

1125

Program:

<span class="com">#include</span><span class="str">&lt;stdio.h&gt;</span><span class="pln">
 
</span><span class="kwd">int</span><span class="pln"> main</span><span class="pun">()</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
   </span><span class="kwd">int</span><span class="pln"> arr</span><span class="pun">[</span><span class="lit">20</span><span class="pun">],</span><span class="pln"> i</span><span class="pun">,</span><span class="pln"> j</span><span class="pun">,</span><span class="pln"> k</span><span class="pun">,</span><span class="pln"> size</span><span class="pun">;</span><span class="pln">
 
   printf</span><span class="pun">(</span><span class="str">"\nEnter array size : "</span><span class="pun">);</span><span class="pln">
   scanf</span><span class="pun">(</span><span class="str">"%d"</span><span class="pun">,</span><span class="pln"> </span><span class="pun">&amp;</span><span class="pln">size</span><span class="pun">);</span><span class="pln">
 
   printf</span><span class="pun">(</span><span class="str">"\nAccept Numbers : "</span><span class="pun">);</span><span class="pln">
   </span><span class="kwd">for</span><span class="pln"> </span><span class="pun">(</span><span class="pln">i </span><span class="pun">=</span><span class="pln"> </span><span class="lit">0</span><span class="pun">;</span><span class="pln"> i </span><span class="pun">&lt;</span><span class="pln"> size</span><span class="pun">;</span><span class="pln"> i</span><span class="pun">++)</span><span class="pln">
      scanf</span><span class="pun">(</span><span class="str">"%d"</span><span class="pun">,</span><span class="pln"> </span><span class="pun">&amp;</span><span class="pln">arr</span><span class="pun">[</span><span class="pln">i</span><span class="pun">]);</span><span class="pln">
 
   printf</span><span class="pun">(</span><span class="str">"\nArray with Unique list  : "</span><span class="pun">);</span><span class="pln">
   </span><span class="kwd">for</span><span class="pln"> </span><span class="pun">(</span><span class="pln">i </span><span class="pun">=</span><span class="pln"> </span><span class="lit">0</span><span class="pun">;</span><span class="pln"> i </span><span class="pun">&lt;</span><span class="pln"> size</span><span class="pun">;</span><span class="pln"> i</span><span class="pun">++)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
      </span><span class="kwd">for</span><span class="pln"> </span><span class="pun">(</span><span class="pln">j </span><span class="pun">=</span><span class="pln"> i </span><span class="pun">+</span><span class="pln"> </span><span class="lit">1</span><span class="pun">;</span><span class="pln"> j </span><span class="pun">&lt;</span><span class="pln"> size</span><span class="pun">;)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
         </span><span class="kwd">if</span><span class="pln"> </span><span class="pun">(</span><span class="pln">arr</span><span class="pun">[</span><span class="pln">j</span><span class="pun">]</span><span class="pln"> </span><span class="pun">==</span><span class="pln"> arr</span><span class="pun">[</span><span class="pln">i</span><span class="pun">])</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
            </span><span class="kwd">for</span><span class="pln"> </span><span class="pun">(</span><span class="pln">k </span><span class="pun">=</span><span class="pln"> j</span><span class="pun">;</span><span class="pln"> k </span><span class="pun">&lt;</span><span class="pln"> size</span><span class="pun">;</span><span class="pln"> k</span><span class="pun">++)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
               arr</span><span class="pun">[</span><span class="pln">k</span><span class="pun">]</span><span class="pln"> </span><span class="pun">=</span><span class="pln"> arr</span><span class="pun">[</span><span class="pln">k </span><span class="pun">+</span><span class="pln"> </span><span class="lit">1</span><span class="pun">];</span><span class="pln">
            </span><span class="pun">}</span><span class="pln">
            size</span><span class="pun">--;</span><span class="pln">
         </span><span class="pun">}</span><span class="pln"> </span><span class="kwd">else</span><span class="pln">
            j</span><span class="pun">++;</span><span class="pln">
      </span><span class="pun">}</span><span class="pln">
   </span><span class="pun">}</span><span class="pln">
 
   </span><span class="kwd">for</span><span class="pln"> </span><span class="pun">(</span><span class="pln">i </span><span class="pun">=</span><span class="pln"> </span><span class="lit">0</span><span class="pun">;</span><span class="pln"> i </span><span class="pun">&lt;</span><span class="pln"> size</span><span class="pun">;</span><span class="pln"> i</span><span class="pun">++)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
      printf</span><span class="pun">(</span><span class="str">"%d "</span><span class="pun">,</span><span class="pln"> arr</span><span class="pun">[</span><span class="pln">i</span><span class="pun">]);</span><span class="pln">
   </span><span class="pun">}</span><span class="pln">
 
   </span><span class="kwd">return</span><span class="pln"> </span><span class="pun">(</span><span class="lit">0</span><span class="pun">);</span><span class="pln">
</span><span class="pun">}</span>

Output:

Enter array size : 5
Accept Numbers : 1 3 4 5 3
Array with Unique list  : 1 3 4 5

Explanation:

none

This Particular section is dedicated to Programs only. If you want learn more about Data Structure. Then you can visit below links to get more depth on this subject.