40 lines
1.1 KiB
Java
40 lines
1.1 KiB
Java
package strings;
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/**
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* Wikipedia: https://en.wikipedia.org/wiki/Pangram
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*/
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public class Pangram {
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/**
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* Driver Code
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*/
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public static void main(String[] args) {
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assert isPangram("The quick brown fox jumps over the lazy dog");
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assert !isPangram("The quick brown fox jumps over the azy dog"); /* not exists l character */
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}
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/**
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* Check if a string is a pangram string or not
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*
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* @param s string to check
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* @return {@code true} if given string is pangram, otherwise {@code false}
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*/
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public static boolean isPangram(String s) {
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boolean[] marked = new boolean[26]; /* by default all letters don't exists */
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char[] values = s.toCharArray();
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for (char value : values) {
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if (Character.isLetter(value)) {
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int index = Character.isUpperCase(value) ? value - 'A' : value - 'a';
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marked[index] = true; /* mark current character exists */
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}
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}
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for (boolean b : marked) {
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if (!b) {
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return false;
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}
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}
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return true;
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}
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}
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