refactoring next_bigger_number

Author: nerdrun

next_bigger_number_with_the_same_digits/main.js

@@ -3,7 +3,7 @@ function nextBigger(n) {
   let index = array.findLastIndex((_, index) => array[index] > array[index - 1])
   if (index <= 0) return -1;
 
-  const [suffle, temp] = [array.splice(index).sort(), array[array.length - 1]];
+  const [suffle, temp] = [array.splice(index).sort(), array.at(-1)];
 
   index = suffle.findIndex(value => value > temp);
   array[array.length - 1] = suffle[index];

next_bigger_number_with_the_same_digits/main.test.js

@@ -13,6 +13,10 @@ describe('The next bigger number', () => {
     expect(nextBigger(2017)).toBe(2071)
   })
 
+  test('the next bigger number of 2314 is 2341', () => {
+    expect(nextBigger(2314)).toBe(2341)
+  })
+
   test('the next bigger number of 144 is 414', () => {
     expect(nextBigger(144)).toBe(414)
   })
@@ -25,6 +29,10 @@ describe('The next bigger number', () => {
     expect(nextBigger(643220)).toBe(-1)
   })
 
+  test('the next bigger number of 7139401 is 7139410', () => {
+    expect(nextBigger(7139401)).toBe(7139410)
+  })
+
   test('the next bigger number of 29977540 is 40257799', () => {
     expect(nextBigger(29977540)).toBe(40257799)
   })