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Articles by AmitDiwan
Page 622 of 840
Java program to count the characters in each word in a given sentence
To count the characters in each word in a given sentence, the Java code is as follows −Exampleimport java.util.*; public class Demo{ static final int max_chars = 256; static void char_occurence(String my_str){ int count[] = new int[max_chars]; int str_len = my_str.length(); for (int i = 0; i < str_len; i++) count[my_str.charAt(i)]++; char ch[] = new char[my_str.length()]; for (int i = 0; i < str_len; i++){ ch[i] = my_str.charAt(i); int find = 0; for (int j = 0; j
Read MoreJava Program to Count trailing zeroes in factorial of a number
To count trailing zeroes in factorial of a number, the Java code is as follows −Exampleimport java.io.*; public class Demo{ static int trailing_zero(int num){ int count = 0; for (int i = 5; num / i >= 1; i *= 5){ count += num / i; } return count; } public static void main (String[] args){ int num = 1000000; System.out.println("The number of trailing zeroes in " + num +" factorial is " + ...
Read MoreJava program to expand a String if range is given?
To expand a String if range is given, the Java code is as follows −Examplepublic class Demo { public static void expand_range(String word) { StringBuilder my_sb = new StringBuilder(); String[] str_arr = word.split(", "); for (int i = 0; i < str_arr.length; i++){ String[] split_str = str_arr[i].split("-"); if (split_str.length == 2){ int low = Integer.parseInt(split_str[0]); int high = Integer.parseInt(split_str[split_str.length - 1]); while (low
Read MoreJava Program to find reminder of array multiplication divided by n
To find reminder of array multiplication divided by n, the Java code is as follows −Exampleimport java.util.*; import java.lang.*; public class Demo{ public static int remainder(int my_arr[], int arr_len, int val){ int mul_val = 1; for (int i = 0; i < arr_len; i++) mul_val = (mul_val * (my_arr[i] % val)) % val; return mul_val % val; } public static void main(String argc[]){ int[] my_arr = new int []{ 35, 100, 69, 99, 27, 88, 12, 25 }; ...
Read MoreJava Program to Find the closest pair from two sorted arrays
To find the closest pair from two sorted array, the Java code is as follows −Examplepublic class Demo { void closest_pair(int my_arr_1[], int my_arr_2[], int arr_1_len, int arr_2_len, int sum){ int diff = Integer.MAX_VALUE; int result_l = 0, result_r = 0; int l = 0, r = arr_2_len-1; while (l=0){ if (Math.abs(my_arr_1[l] + my_arr_2[r] - sum) < diff){ result_l = l; result_r = r; diff ...
Read MoreUnreachable Code Error in Java
Unreachable code error occurs when the code can’t be compiled due to a variety of reasons, some of which include: infinite loop, return statement before the unreachable line of code.Let us see an example −Examplepublic class Demo{ public static void main(String args[]){ int val = 5; for (;;){ if (val == 5){ break; System.out.println("If the condition is not true, this line would be printed. "); } } } }Output/Demo.java:11: ...
Read MoreUsing TreeMap to sort User-defined Objects in Java
To sort user-defined object in Java, the code is as follows −Exampleimport java.io.*; import java.util.*; public class Demo{ static void sort_objects(String my_data){ String[] my_vals = my_data.split(" "); Map my_map = new TreeMap(); for (int i = 1; i < my_vals.length; i += 2){ int my_age = Integer.parseInt(my_vals[i]); String name = my_vals[i - 1]; if (my_map.containsKey(my_age)){ ArrayList my_list = my_map.get(my_age); my_list.add(name); ...
Read MoreUsing predefined class name as Class or Variable name in Java
Using a predefined class name as a class nameLet us see an example −Examplepublic class Number{ public static void main (String[] args){ System.out.println("Pre-defined class name can be used as a class name"); } }OutputPre-defined class name can be used as a class nameThe class Number has a main function that displays a message when it is executed. The main function takes string values as arguments.Using a predefined class name as a variable nameLet us see an example −Examplepublic class String{ public static void main (java.lang.String[] args){ System.out.println("Pre-defined class name can be ...
Read MoreUsing underscore in Numeric Literals in Java
Followig is the code showing how to use underscore in numeric literals in Java −Examplepublic class Demo{ public static void main (String[] args) throws java.lang.Exception{ int my_num_1 = 6_78_00_120; System.out.println("The number is : " + my_num_1); long my_num_2 = 2_00_11_001; System.out.println("The number is : " + my_num_2); float my_num_3 = 4.01_981F; System.out.println("The number is : " + my_num_3); double my_num_4 = 12.89_46_061; System.out.println("The number is : " + my_num_4); } }OutputThe number is : ...
Read MoreWays to read input from console in Java
Let us see some ways to read input from console in Java −Exampleimport java.util.Scanner; public class Demo{ public static void main(String args[]){ Scanner my_scan = new Scanner(System.in); String my_str = my_scan.nextLine(); System.out.println("The string is "+my_str); int my_val = my_scan.nextInt(); System.out.println("The integer is "+my_val); float my_float = my_scan.nextFloat(); System.out.println("The float value is "+my_float); } }OutputThe string is Joe The integer is 56 The float value is 78.99A class named Demo contains the main function. An instance of the ...
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