doSomething

.idea/workspace.xml

@@ -2,6 +2,7 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="ff0f55eb-552a-45f4-8a74-866e22f63e9a" name="Default" comment="">
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/main/java/Question1.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Question1.java" afterDir="false" />
     </list>
     <ignored path="$PROJECT_DIR$/out/" />
@@ -22,12 +23,12 @@
       </usages-collector>
       <usages-collector id="statistics.file.extensions.edit">
         <counts>
-          <entry key="java" value="718" />
+          <entry key="java" value="1048" />
         </counts>
       </usages-collector>
       <usages-collector id="statistics.file.types.edit">
         <counts>
-          <entry key="JAVA" value="718" />
+          <entry key="JAVA" value="1048" />
         </counts>
       </usages-collector>
       <usages-collector id="statistics.spring.boot.run.usages" />
@@ -60,8 +61,8 @@
       <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/src/main/java/Question1.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="395">
-              <caret line="87" column="92" selection-start-line="87" selection-start-column="92" selection-end-line="87" selection-end-column="92" />
+            <state relative-caret-position="247">
+              <caret line="67" column="30" lean-forward="true" selection-start-line="67" selection-start-column="30" selection-end-line="67" selection-end-column="30" />
               <folding>
                 <element signature="e#1408#1409#0" expanded="true" />
                 <element signature="e#1456#1457#0" expanded="true" />
@@ -73,8 +74,8 @@
       <file pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/test/java/Question1Test.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="225">
-              <caret line="15" column="18" selection-start-line="15" selection-start-column="17" selection-end-line="15" selection-end-column="35" />
+            <state relative-caret-position="285">
+              <caret line="19" lean-forward="true" selection-start-line="19" selection-end-line="19" />
             </state>
           </provider>
         </entry>
@@ -177,7 +178,7 @@
   <component name="PropertiesComponent">
     <property name="WebServerToolWindowFactoryState" value="false" />
     <property name="aspect.path.notification.shown" value="true" />
-    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1541037127180" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1541073267663" />
     <property name="com.intellij.testIntegration.createTest.CreateTestDialog.defaultLibrary" value="JUnit4" />
     <property name="last_opened_file_path" value="$PROJECT_DIR$" />
     <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
@@ -322,7 +323,7 @@
       <option name="presentableId" value="Default" />
       <updated>1541012263419</updated>
       <workItem from="1541012264832" duration="5000000" />
-      <workItem from="1541023510544" duration="5715000" />
+      <workItem from="1541023510544" duration="6833000" />
     </task>
     <servers />
   </component>
@@ -359,7 +360,7 @@
     </history-entry>
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="10715000" />
+    <option name="totallyTimeSpent" value="11833000" />
   </component>
   <component name="ToolWindowManager">
     <frame x="0" y="0" width="1280" height="800" extended-state="6" />
@@ -375,7 +376,7 @@
       <window_info anchor="bottom" id="Database Changes" show_stripe_button="false" />
       <window_info anchor="bottom" id="Message" order="0" />
       <window_info anchor="bottom" id="Find" order="1" />
-      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.3410959" />
+      <window_info anchor="bottom" id="Run" order="2" weight="0.3410959" />
       <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
       <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
       <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
@@ -425,15 +426,15 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/test/java/Question1Test.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="225">
-          <caret line="15" column="18" selection-start-line="15" selection-start-column="17" selection-end-line="15" selection-end-column="35" />
+        <state relative-caret-position="285">
+          <caret line="19" lean-forward="true" selection-start-line="19" selection-end-line="19" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/Question1.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="395">
-          <caret line="87" column="92" selection-start-line="87" selection-start-column="92" selection-end-line="87" selection-end-column="92" />
+        <state relative-caret-position="247">
+          <caret line="67" column="30" lean-forward="true" selection-start-line="67" selection-start-column="30" selection-end-line="67" selection-end-column="30" />
           <folding>
             <element signature="e#1408#1409#0" expanded="true" />
             <element signature="e#1456#1457#0" expanded="true" />

src/main/java/Question1.java

@@ -3,34 +3,34 @@ public class Question1 {
     //returns random integers between 7(s+1) and 1
     public static void doSomething0()
     {
-        int s = 6;
+        int s = 6; // s is variable of integer type and value initializes as 6
 
-        int r = (int) (Math.random() * s) + 1;
+        int r = (int) (Math.random() * s) + 1; // r = random integers between 7(s+1) and 1
 
-        System.out.println(r);
+        System.out.println(r); // print the r value
     }
 
     public static void doSomething1(int n)
     {
         int foo = 1;
 
-        while (foo <= n / 2) {
-            foo *= 2;
+        while (foo <= n / 2) { // first lets take n value as 5 , 1 <=5/2
+            foo *= 2; // now foo is 4
         }
 
-        while (foo > 0) {
+        while (foo > 0) { //4>0 (condition true)
 
-            if (n < foo) {
+            if (n < foo) { //5<4 (condition false)
                 System.out.print(0);
             } else {
-                System.out.print(1);
-                n -= foo;
+                System.out.print(1); // prints 1
+                n -= foo; // n=1
             }
 
-            foo /= 2;
+            foo /= 2; // foo value 0 and 1
         }
 
-        System.out.println();
+        System.out.println(); // prints 0 and 1
     }
     // 1)n=4,i=0,p=1 , repeated while loop upto i=4 and printed the values of i and p
     // 2)n=12,i=0,p=1, repeated while loop upto i=12 and printed the values of i and p
@@ -64,16 +64,16 @@ public class Question1 {
         System.out.println(t);
     }
 
-    public static void doSomething4(double x) {
-        x = x % (2 * Math.PI);
+    public static void doSomething4(double x) { ////let us take x =5.2
+        x = x % (2 * Math.PI); // x=5.2%(2*3.145)=0.32672563
 
         double term = 1.0;
         double sum  = 0.0;
 
-        for (int i = 1; term != 0.0; i++) {
-            term *= (x / i);
-            if (i % 4 == 1) sum += term;
-            if (i % 4 == 3) sum -= term;
+        for (int i = 1; term != 0.0; i++) { //i is 1 and term is not equal to 0  and  increment the value of i
+            term *= (x / i); //term=0.32672563;0.16335
+            if (i % 4 == 1) sum += term; // i=0.04
+            if (i % 4 == 3) sum -= term; // i=0.04
         }
         System.out.printf("%.4f\t%.8f\n", x, sum);
     }
@@ -92,8 +92,8 @@ public class Question1 {
         while (d < n) {
             int value = getInt(n);
             k++;
-            if (!a[value]) {
-                d++;
+            if (!a[value]) { // if a[value] is false
+                d++; // increment the value of d
                 a[value] = true;
             }
         }