Lab 1.04

.gitignore

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+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+.idea
+
+### 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

Lab-1.04.iml

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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>

src/com/ironhack/labs/lab_104/Main.java

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+package com.ironhack.labs.lab_104;
+
+import java.util.Arrays;
+
+public class Main {
+    public static void main(String[] args){
+        // TASK ONE
+        int difference = 0;
+        int[] sampleArray = {1,8,5,4,9,-12,34,21,0,3,4,65};
+        difference = returnDifference(sampleArray);
+        System.out.println("The difference between the largest and smallest value of the Array is: " + difference);
+
+        // TASK TWO
+        printTwoSmallest(sampleArray);
+
+        // TASK THREE
+        int x = 25;
+        int y = 13;
+        double res = 0;
+        res = calculateMathematicalExpression(x,y);
+        System.out.println("The result of the Mathematical Expression when x="+x+" and y="+y+" is equal to: "+res);
+
+    }
+
+    private static double calculateMathematicalExpression(int x, int y) {
+        double res = 0;
+        res = Math.pow(x,2)+Math.pow((4*(double)y/5) - (double)x,2);
+        return res;
+    }
+
+    private static void printTwoSmallest(int[] sampleArray) {
+        int min1 = sampleArray[0];
+        int min2 = sampleArray[1];
+        //MODO LOOP
+        for (int i = 0; i < sampleArray.length; i++) {
+            if(sampleArray[i]<min1){ // SMALLER THAN THE SMALLEST, MUST SHIFT BOTH
+                min2 = min1;
+                min1 = sampleArray[i];
+            }else if(sampleArray[i]<min2){ // SMALLER THAN SECOND SMALLEST, JUST SWITCH
+                min2 = sampleArray[i];
+            }
+        }
+
+        /*MODO SORT
+        Arrays.sort(sampleArray);
+        min1 = sampleArray[0];
+        min2 = sampleArray[1];
+        */
+        System.out.println("The smallest element is: "+ min1 +" and the second smallest element is: "+ min2);
+
+    }
+
+    private static int returnDifference(int[] sampleArray) {
+        int result=0;
+        // MODO LOOP
+        int max = sampleArray[0];
+        int min = sampleArray[0];
+        for (int i = 0; i < sampleArray.length; i++) {
+            if(sampleArray[i]<min){
+                min = sampleArray[i];
+            }
+            if(sampleArray[i]>max){
+                max = sampleArray[i];
+            }
+        }
+        result = max - min;
+        return result;
+         /* MODO SORT
+        Arrays.sort(sampleArray);
+        result = sampleArray[sampleArray.length-1] - sampleArray[0];
+        return result;
+         */
+    }
+}