Use String.lastIndexOf to find a character in a string : String Find Search « Data Type « Java TutorialJava Tutorial Data Type String Find Search public class MainClass { public static void main( String args[] ) { String letters = "abcdefghijklmabcdefghijklm"; System.out.printf( ...
Write a Java program to find the first non-repeating character in a string. Visual Presentation: Sample Solution: Java Code: // Importing necessary Java utilities.importjava.util.*;// Define a class named Main.publicclassMain{// Main method to execute the program.publicstaticvoidmain(String[]...
Write a Java program to find the index of the first unique character in a given string. Assume that there is at least one unique character in the string. Pictorial Presentation: Sample Solution: Java Code: importjava.util.*;publicclassSolution{publicstaticvoidmain(String[]args){// Test the ...
public class Main { public static void main(String[] argv) { String str = "java2s.com"; char searchChar = 'o'; System.out.println(lastIndexOf(str, searchChar)); }/*w ww. j av a 2 s . c om*/ public static int lastIndexOf(String str, char searchChar) { if (isEmpty(str)...
1. Using Plain Java Let us start with writing the program logic ourselves. In this solution, we are creatingMapwhere each unique character in the string is theMapkey, and the number of occurrences of the character is stored as the value. ...
The character v has occurred for 1 times Using HashMap We can use HashMap as well to find Frequency of Each Character in a String. Create a HashMap which will contain character to count mapping. Iterate over String make count to 1 if HashMap do not contain the character and put it ...
'a' in 'character' exists at index 2 The find() is a built-in method in Python that searches for a substring in a string. It returns the index of the first occurrence of the substring or -1 if not found. It holds: The substring argument is required and used to search it in the...
There are so many similar questions you may get in an Interview like Create your own contains() method in java, find duplicate char from String, etc. In this tutorial we will create simple way to find duplicate character from String. package com.crunchify.tutorials; import java.util.HashMap...
Finding the first non-repeating character in a string is a common programming problem. It involves finding the first character that appears only once in the string. This task helps understand how to manipulate strings and use basic data structures in Java. Problem Statement Given a str...
C++ program to find the last index of a character in a string#include <iostream> #include <string.h> using namespace std; //function to get lastt index of a character int getLastIndex(char *s, char c) { int length; int i; //loop counter //get length length = strlen(s); //...