Add largest element in an array examples

Author: gauravkukade

README.md

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-# Visit coderolls.com
+# Visit [coderolls.com](https://coderolls.com)

java-programs/largest-element-in-an-array/LargestElementInArray.java

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+package com.coderolls.JavaPrograms;
+/**
+ * A Java program to find the largest number in an array 
+ * using for loop iteration.
+ * 
+ * @author coderolls.com
+ *
+ */
+public class LargestElementInArray {
+
+	public static void main(String[] args) {
+		int[] arr = {2, 5, 9, 8, 11};
+		
+		int largestElement = getLargest(arr);
+		System.out.println("Largest element in an array 'arr' is :"+ largestElement);
+
+	}
+
+	private static int getLargest(int[] arr) {
+		int n = arr.length;
+		int largest = arr[0];
+		
+		for(int i=0; i<n; i++) {
+			// if number at  index i is bigger than the current largest number,
+			// copy it to 'largest' int variable
+			if(arr[i]>arr[0]) {
+				largest = arr[i];
+			}
+		}
+		return largest;
+	}
+}

java-programs/largest-element-in-an-array/LargestElementInArrayUsingArrays.java

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+package com.coderolls.JavaPrograms;
+
+import java.util.Arrays;
+
+/**
+ * A Java program to find the largest number in an array 
+ * using Arrays.sort().
+ * 
+ * Arrays.sort() sort the array in natural sorting order
+ * 
+ * @author coderolls.com
+ *
+ */
+public class LargestElementInArrayUsingArrays {
+
+	public static void main(String[] args) {
+		int[] arr = {2, 5, 9, 8, 11};
+		
+		int largestElement = getLargest(arr);
+		System.out.println("Largest element in an array 'arr' using Array.sort() is :"+ largestElement);
+
+	}
+
+	private static int getLargest(int[] arr) {
+		Arrays.sort(arr);
+		return arr[arr.length-1];
+	}
+}

java-programs/largest-element-in-an-array/LargestElementInArrayUsingStream.java

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+package com.coderolls.JavaPrograms;
+
+import java.util.Arrays;
+/**
+ * A Java program to find the largest number in an array 
+ * using Java 8 Streams API.
+ * 
+ * max() returns the maximum element of this stream
+ * 
+ * @author coderolls.com
+ *
+ */
+public class LargestElementInArrayUsingStream {
+
+	public static void main(String[] args) {
+		int[] arr = {2, 5, 9, 8, 11};
+		
+		int largestElement = getLargest(arr);
+		System.out.println("Largest element in an array 'arr' using Java 8 Streams API is :"+ largestElement);
+	}
+
+	private static int getLargest(int[] arr) {
+		int largest = Arrays.stream(arr).max().getAsInt();
+		return largest;
+	}
+}