count the number of words in a string java
public static void main(String[] args)
{
//return the number of words in a string
String example = "This is a good exercise";
int length = example.split(" ").length;
System.out.println("The string is " + length + " words long.");
}java count frequency of characters in a string
public class Frequency
{
public static void main(String[] args) {
String str = "picture perfect";
int[] freq = new int[str.length()];
int i, j;
//Converts given string into character array
char string[] = str.toCharArray();
for(i = 0; i <str.length(); i++) {
freq[i] = 1;
for(j = i+1; j <str.length(); j++) {
if(string[i] == string[j]) {
freq[i]++;
//Set string[j] to 0 to avoid printing visited character
string[j] = '0';
}
}
}
//Displays the each character and their corresponding frequency
System.out.println("Characters and their corresponding frequencies");
for(i = 0; i <freq.length; i++) {
if(string[i] != ' ' && string[i] != '0')
System.out.println(string[i] + "-" + freq[i]);
}
}
}Copyright © 2021 Codeinu
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