I added new solution implemented in java

haoel · anasmak04 · Jan 25, 2023 · Jan 26, 2023 · Jan 26, 2023 · Jan 26, 2023
commit 7448c2ed6ec47101b84904d06ca95e54b2cb8af9
diff --git a/algorithms/java/src/PlusOne/PlusOne.java b/algorithms/java/src/PlusOne/PlusOne.java
@@ -0,0 +1,32 @@
+// Source : https://leetcode.com/problems/plus-one/description/
+// Author : Anas Mak
+// Date   : 2023-01-26
+
+/**********************************************************************************
+ * You are given a large integer represented as an integer array digits, 
+ * where each digits[i] is the ith digit of the integer. 
+ * The digits are ordered from most significant to least significant in left-to-right order.
+ * The large integer does not contain any leading 0's.
+ * Increment the large integer by one and return the resulting array of digits.
+ **********************************************************************************/
+
+package Solution;
+
+ class Solution {
+    public int[] plusOne(int[] digits) {
+        for(int i = digits.length - 1 ; i >=0 ; i--){
+            if(digits[i] != 9){
+                digits[i]+=1;
+                return digits;
+            }
+
+            else{
+               digits[i] = 0;
+            }
+        }
+
+        int[] array = new int[digits.length + 1];
+        array[0] = 1;
+        return array;
+    }
+}
diff --git a/algorithms/java/src/PlusOne/PlusOneTest.java b/algorithms/java/src/PlusOne/PlusOneTest.java
@@ -0,0 +1,21 @@
+package Solution;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Test for 66. Plus One
+ */
+public class PlusOne {
+	@Test
+	public void test() {
+		Solution solution = new Solution();
+		int[] array1 = [4,3,2,1];
+		Assert.assertTrue(solution.PlusOne(array1) == [4,3,2,2]);
+		int[] array2 = [1,2,3];
+		Assert.assertTrue(solution.SingleNumber(array2) == [1,2,4]);
+        int[] array3 = [9];
+		Assert.assertTrue(solution.SingleNumber(array3) == [1,0]);
+
+	}
+}
diff --git a/algorithms/java/src/SingleNumber/SingleNumberTest.java b/algorithms/java/src/SingleNumber/SingleNumberTest.java
@@ -4,9 +4,9 @@
 import org.junit.Test;
 
 /**
- * Test for 58. Length of Last Word
+ * Test for 136. Single Number
  */
-public class TestLengthOfLastWord {
+public class SingleNumber {
 	@Test
 	public void test() {
 		Solution solution = new Solution();