Merge pull request OpenGuide#1 from chinmoy159/master

added a few simple codes in JAVA

Author: HarendraSingh22

searching/binary_searching.java

@@ -0,0 +1,25 @@
+/**
+* Program for Binary Searching in JAVA
+* return the index of searched element if found,
+* else returns -1.
+*
+* Prerequisite -- Array has to be SORTED.
+*/
+public class binary_searching
+{
+	public static int searching(int[] arr, int val)
+	{
+		int u, l, m;
+		for (l = 0, u = arr.length; l <= u; ) {
+			m = (l + u) / 2;
+			if (arr[m] == val) {
+				return m;
+			} else if (arr[m] < val) {
+				u = m - 1;
+			} else {
+				l = m + 1;
+			}
+		}
+		return -1;
+	}
+}

searching/linear_searching.java

@@ -0,0 +1,18 @@
+/**
+* Program for Linear Searching in JAVA
+* return the index of searched element if found,
+* else returns -1.
+*/
+public class linear_searching
+{
+	public static int search(int[] arr, int val)
+	{
+		int res;
+		for (res = 0; res < arr.length; ++res) {
+			if (arr[res] == val) {
+				return res;
+			}
+		}
+		return -1;
+	}
+}