1 files changed, 0 insertions, 102 deletions
diff --git a/src/pkg/container/heap/heap.go b/src/pkg/container/heap/heap.go
deleted file mode 100644
index 5b68827df..000000000
--- a/src/pkg/container/heap/heap.go
+++ /dev/null
@@ -1,102 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package heap provides heap operations for any type that implements
-// heap.Interface.
-//
-package heap
-
-import "sort"
-
-// Any type that implements heap.Interface may be used as a
-// min-heap with the following invariants (established after
-// Init has been called):
-//
-//	!h.Less(j, i) for 0 <= i < h.Len() and j = 2*i+1 or 2*i+2 and j < h.Len()
-//
-type Interface interface {
-	sort.Interface
-	Push(x interface{})
-	Pop() interface{}
-}
-
-
-// A heap must be initialized before any of the heap operations
-// can be used. Init is idempotent with respect to the heap invariants
-// and may be called whenever the heap invariants may have been invalidated.
-// Its complexity is O(n) where n = h.Len().
-//
-func Init(h Interface) {
-	// heapify
-	n := h.Len()
-	for i := n/2 - 1; i >= 0; i-- {
-		down(h, i, n)
-	}
-}
-
-
-// Push pushes the element x onto the heap. The complexity is
-// O(log(n)) where n = h.Len().
-//
-func Push(h Interface, x interface{}) {
-	h.Push(x)
-	up(h, h.Len()-1)
-}
-
-
-// Pop removes the minimum element (according to Less) from the heap
-// and returns it. The complexity is O(log(n)) where n = h.Len().
-// Same as Remove(h, 0).
-//
-func Pop(h Interface) interface{} {
-	n := h.Len() - 1
-	h.Swap(0, n)
-	down(h, 0, n)
-	return h.Pop()
-}
-
-
-// Remove removes the element at index i from the heap.
-// The complexity is O(log(n)) where n = h.Len().
-//
-func Remove(h Interface, i int) interface{} {
-	n := h.Len() - 1
-	if n != i {
-		h.Swap(i, n)
-		down(h, i, n)
-		up(h, i)
-	}
-	return h.Pop()
-}
-
-
-func up(h Interface, j int) {
-	for {
-		i := (j - 1) / 2 // parent
-		if i == j || h.Less(i, j) {
-			break
-		}
-		h.Swap(i, j)
-		j = i
-	}
-}
-
-
-func down(h Interface, i, n int) {
-	for {
-		j1 := 2*i + 1
-		if j1 >= n {
-			break
-		}
-		j := j1 // left child
-		if j2 := j1 + 1; j2 < n && !h.Less(j1, j2) {
-			j = j2 // = 2*i + 2  // right child
-		}
-		if h.Less(i, j) {
-			break
-		}
-		h.Swap(i, j)
-		i = j
-	}
-}