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Added function in Pangram.java (#3703)

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* Added function in Pangram.java

Added isPangramIndexOf() function in Pangram.java

* Added Tests for new function

Added Tests for isPangramIndexOf() function

* fixed typo

* changed function name

* changed function name

Co-authored-by: Debasish Biswas <debasishbsws.abc@gmail.com>
This commit is contained in:
Taranjeet Singh Kalsi
2022-10-27 23:26:34 +05:30
committed by GitHub
parent b2393d62a0
commit acf7a86b96
2 changed files with 28 additions and 6 deletions
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19
src/main/java/com/thealgorithms/strings/Pangram.java
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@ -36,4 +36,23 @@ public class Pangram {
} }
return true; return true;
} }
/**
* Checks if a String is Pangram or not by checking if each alhpabet is present or not
*
* @param s The String to check
* @return {@code true} if s is a Pangram, otherwise {@code false}
*/
public static boolean isPangram2(String s) {
if (s.length() < 26) {
return false;
}
s = s.toLowerCase(); // Converting s to Lower-Case
for (char i = 'a'; i <= 'z'; i++) {
if (s.indexOf(i) == -1) {
return false; // if any alphabet is not present, return false
}
}
return true;
}
} }

15
src/test/java/com/thealgorithms/strings/PangramTest.java
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@ -1,17 +1,20 @@
package com.thealgorithms.strings; package com.thealgorithms.strings;
import static com.thealgorithms.strings.Pangram.isPangram;
import static org.junit.jupiter.api.Assertions.*; import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.Test; import org.junit.jupiter.api.Test;
public class PangramTest { public class PangramTest {
@Test @Test
public void testPangram() { public void testPangram() {
assertTrue(isPangram("The quick brown fox jumps over the lazy dog")); assertTrue(Pangram.isPangram("The quick brown fox jumps over the lazy dog"));
assertFalse(isPangram("The quick brown fox jumps over the azy dog")); // L is missing assertFalse(Pangram.isPangram("The quick brown fox jumps over the azy dog")); // L is missing
assertFalse(isPangram("+-1234 This string is not alphabetical")); assertFalse(Pangram.isPangram("+-1234 This string is not alphabetical"));
assertFalse(isPangram("\u0000/\\ Invalid characters are alright too")); assertFalse(Pangram.isPangram("\u0000/\\ Invalid characters are alright too"));
assertTrue(Pangram.isPangram2("The quick brown fox jumps over the lazy dog"));
assertFalse(Pangram.isPangram2("The quick brown fox jumps over the azy dog")); // L is missing
assertFalse(Pangram.isPangram2("+-1234 This string is not alphabetical"));
assertFalse(Pangram.isPangram2("\u0000/\\ Invalid characters are alright too"));
} }
} }