Java Insightz

package com.sbs.java8.praticse; public class StringCompression { public StringCompression() { // TODO Auto-generated constructor stub } public static void main(String[] args) { System.out.println(compressString("aaaabbbbbccccAAAAccccccccdefg")); } public static String compressString(String str) { //String str = "aaaabbbbbcccc"; char[] charArray = str.toCharArray(); String compressedString = ""; int i = 0; while (i charArray.length)? str: compressedString; return output; } }

public class BasicSortings { public static void main(String[] args) { int temp; int iterationCount = 0; int array[] = { 2, 33, 29, 30, 21, 98}; //Bubble sort or Simple sort for (int i = 0; i array[j]) { temp = array[i]; array[i] = array[j]; array[j] = temp; } iterationCount++; } } System.out.println("Bubble Sort Big 0(n) --> " + iterationCount); for (int s = 0; s //Selection Sort iterationCount =0; int sortPointer=0; for (int i = sortPointer; i array[j]) { temp = array[i]; array[i] = array[j]; array[j] = temp; } iterationCount++; } sortPointer++; } System.out.println("Selection Sort Big 0(n) --> " + iterationCount); for (int s = 0; s //Insertion Sort iterationCount=0; for (int i = 1; i 0;j--) // Inner loop travers back wards { if(array[j-1]>array[j]) { temp = array[j-1]; array[j-1] ...

Servlets & jsp overview

package com.sbs.java8.praticse; public class SecondHightestClass { public static void main(String[] args) { final Integer[] intArray = { 10, 2, 36, 7, 29, 30, 100, 20, 90, 83, 87 }; final int n = intArray.length; int sortPointer = intArray.length; for (int m = n; m > (n - sortPointer); m--) { for (int i = 0; i < n - 1; i++) { int j = i + 1; if (intArray[i] > intArray[j]) { int temp = intArray[i]; intArray[i] = intArray[j]; intArray[j] = temp; } } sortPointer--; } System.out.println(intArray[n - 2]); } }

package com.sbs.java8.praticse; import java.util.Arrays; public class AnagramClass { public static void main(String[] args) { String firstString = "1MASS1111124"; String secondString = "1SAMS1111124"; boolean status = false; if (validateString(firstString,secondString)) { char array1[] = firstString.toLowerCase().toCharArray(); char array2[] = secondString.toLowerCase().toCharArray(); Arrays.sort(array1); Arrays.sort(array2); status = Arrays.equals(array1, array2); } System.out.println("Anogram Status " + status); } private static boolean validateString(String string,String string2) { if (string == null || string.isEmpty()) { return false; } if (string2 == null || string2.isEmpty()) { return false; } if(string.length() != string2.length()){ return false; } return true; } }

NO SQL KEY - VALUE Store  - Similar to a  MAP.    e.g. Dynamo DB or REDIS DOCUMENT Sore   - Similar to KEY-VALUE, value can be JSON/XML and key will be unqiuely idnetified this document.    e.g. Coutch DB or mongoDB. Column Store - Multi timentional table, identifying data with row and column numbers.   e.g.  Cassandra or Apache HBase Graph Store - Store relation between nodes (record entities) . It has better transaction management e.g. Neo4J and Orient DB.