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Strings.java
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74 lines (63 loc) · 2.02 KB
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import java.util.*;
public class Strings {
public static boolean ispalindrome(String str){
for(int i =0;i<str.length()/2;i++){
int n=str.length();
if(str.charAt(i)!=str.charAt(n-1-i)){
return false;
}
}
return true;
}
`// substring
public static String substring(String str, int si, int ei){
String substr = "";
for(int i = si;i<ei;i++){
substr+=str.charAt(i);
}
return substr;
}
// touppercase
public static String touppercase(String str){
StringBuilder sb = new StringBuilder("");
char ch = Character.toUpperCase(str.charAt(0));
sb.append(ch);
for(int i =1;i<str.length();i++){
if(str.charAt(i)==' ' & i<str.length()-1){
sb.append(str.charAt(i));
i++;
sb.append(Character.toUpperCase(str.charAt(i)));
}else{
sb.append(str.charAt(i));
}
}
return sb.toString();
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
// input
String name,Name;
Name = sc.next(); // single wor d
name = sc.nextLine(); //single line
// for(int i=0;i<str.length();i++){
// System.out.println(str.charAt(i));
// }
// System.out.println(ispalindrome(str));
// compareTo functions
// String fruits[]={"mango","banana","apple"};
// String largest=fruits[0];
// for(int i=1;i<fruits.length;i++){
// if(largest.compareTo(fruits[i])<0){
// largest=fruits[i];
// }
// }
// System.out.println(largest);
// Stringbuilder
StringBuilder sb = new StringBuilder("");
for(char ch = 'a';ch<='z';ch++){
sb.append(ch);
}
System.out.println(sb);
sc.close();
}
}