Initial commit

Author: nishant7372

.gitignore

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+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

.idea/.gitignore

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/misc.xml

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+package Sorting_and_Searching.Apartments;public class Main {
+}

.idea/modules.xml

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+import java.util.HashSet;
+import java.util.Scanner;
+import java.util.Set;
+
+public class Distinct_Numbers {
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+
+        int n = scan.nextInt();
+        int[] a = new int[n];
+
+        for(int i=0;i<n;i++)
+            a[i] = scan.nextInt();
+        Set<Integer> set = new HashSet<>();
+
+        for(int x:a)
+        {
+            set.add(x);
+        }
+        System.out.println(set.size());
+    }
+}