git

src/iter/combinations.rs

@@ -346,15 +346,15 @@ where
         let k = indices.as_mut().len();
         let total = checked_binomial(n, k).expect(OVERFLOW_MSG);
         match offset.cmp(&total) {
-            Ordering::Less => {
+            Ordering::Equal => {
                 unrank(indices.as_mut(), offset - 1, n);
                 Self {
                     indices,
                     n,
                     position: IndicesPosition::End,
                 }
             }
-            Ordering::Equal => {
+            Ordering::Less => {
                 unrank(indices.as_mut(), offset, n);
                 Self {
                     indices,
@@ -549,6 +549,8 @@ fn decrement_indices(indices: &mut [usize], n: usize) {
 
     // Decrement index, and reset the ones to its right
     indices[i] -= 1;
+    for (j, index) in indices.iter_mut().enumerate().skip(i + 1) {
+        *index = n - k + j;
     for (j, index) in indices.iter_mut().enumerate().skip(i + 1) {
         *index = n - k + j;
     }