private final boolean upHeap(int origPos) { int i = origPos; T node = heap[i]; // save bottom node int j = i >>> 1; while (j > 0 && lessThan(node, heap[j])) { heap[i] = heap[j]; // shift parents down i = j; j = j >>> 1; } heap[i] = node; // install saved node return i != origPos; }
private final void downHeap(int i) { T node = heap[i]; // save top node int j = i << 1; // find smaller child int k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } while (j <= size && lessThan(heap[j], node)) { heap[i] = heap[j]; // shift up child i = j; j = i << 1; k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } } heap[i] = node; // install saved node }
/** * Adds an Object to a PriorityQueue in log(size) time. * It returns the object (if any) that was * dropped off the heap because it was full. This can be * the given parameter (in case it is smaller than the * full heap's minimum, and couldn't be added), or another * object that was previously the smallest value in the * heap and now has been replaced by a larger one, or null * if the queue wasn't yet full with maxSize elements. */ public T insertWithOverflow(T element) { if (size < maxSize) { add(element); return null; } else if (size > 0 && !lessThan(element, heap[1])) { T ret = heap[1]; heap[1] = element; updateTop(); return ret; } else { return element; } }
private final void upHeap() { int i = size; Object node = heap[i]; // save bottom node int j = i >>> 1; while (j > 0 && lessThan(node, heap[j])) { heap[i] = heap[j]; // shift parents down i = j; j = j >>> 1; } heap[i] = node; // install saved node }
private final void upHeap() { int i = size; Object node = heap[i]; // save bottom node int j = i >>> 1; while (j > 0 && lessThan(node, heap[j])) { heap[i] = heap[j]; // shift parents down i = j; j = j >>> 1; } heap[i] = node; // install saved node }
private final void upHeap() { int i = size; T node = heap[i]; // save bottom node int j = i >>> 1; while (j > 0 && lessThan(node, heap[j])) { heap[i] = heap[j]; // shift parents down i = j; j = j >>> 1; } heap[i] = node; // install saved node }
private final boolean upHeap(int origPos) { int i = origPos; T node = heap[i]; // save bottom node int j = i >>> 1; while (j > 0 && lessThan(node, heap[j])) { heap[i] = heap[j]; // shift parents down i = j; j = j >>> 1; } heap[i] = node; // install saved node return i != origPos; }
private final boolean upHeap(int origPos) { int i = origPos; T node = heap[i]; // save bottom node int j = i >>> 1; while (j > 0 && lessThan(node, heap[j])) { heap[i] = heap[j]; // shift parents down i = j; j = j >>> 1; } heap[i] = node; // install saved node return i != origPos; }
private final void upHeap() { int i = size; Object node = heap[i]; // save bottom node int j = i >>> 1; while (j > 0 && lessThan(node, heap[j])) { heap[i] = heap[j]; // shift parents down i = j; j = j >>> 1; } heap[i] = node; // install saved node }
private final boolean upHeap(int origPos) { int i = origPos; T node = heap[i]; // save bottom node int j = i >>> 1; while (j > 0 && lessThan(node, heap[j])) { heap[i] = heap[j]; // shift parents down i = j; j = j >>> 1; } heap[i] = node; // install saved node return i != origPos; }
private final void downHeap(int i) { T node = heap[i]; // save top node int j = i << 1; // find smaller child int k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } while (j <= size && lessThan(heap[j], node)) { heap[i] = heap[j]; // shift up child i = j; j = i << 1; k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } } heap[i] = node; // install saved node }
private final void downHeap(int i) { T node = heap[i]; // save top node int j = i << 1; // find smaller child int k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } while (j <= size && lessThan(heap[j], node)) { heap[i] = heap[j]; // shift up child i = j; j = i << 1; k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } } heap[i] = node; // install saved node }
private final void downHeap(int i) { T node = heap[i]; // save top node int j = i << 1; // find smaller child int k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } while (j <= size && lessThan(heap[j], node)) { heap[i] = heap[j]; // shift up child i = j; j = i << 1; k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } } heap[i] = node; // install saved node }
private final void downHeap() { int i = 1; T node = heap[i]; // save top node int j = i << 1; // find smaller child int k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } while (j <= size && lessThan(heap[j], node)) { heap[i] = heap[j]; // shift up child i = j; j = i << 1; k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } } heap[i] = node; // install saved node }
private final void downHeap() { int i = 1; Object node = heap[i]; // save top node int j = i << 1; // find smaller child int k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } while (j <= size && lessThan(heap[j], node)) { heap[i] = heap[j]; // shift up child i = j; j = i << 1; k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } } heap[i] = node; // install saved node } }
private final void downHeap() { int i = 1; Object node = heap[i]; // save top node int j = i << 1; // find smaller child int k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } while (j <= size && lessThan(heap[j], node)) { heap[i] = heap[j]; // shift up child i = j; j = i << 1; k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } } heap[i] = node; // install saved node } }
private final void downHeap() { int i = 1; Object node = heap[i]; // save top node int j = i << 1; // find smaller child int k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } while (j <= size && lessThan(heap[j], node)) { heap[i] = heap[j]; // shift up child i = j; j = i << 1; k = j + 1; if (k <= size && lessThan(heap[k], heap[j])) { j = k; } } heap[i] = node; // install saved node } }
/** * Adds an Object to a PriorityQueue in log(size) time. * It returns the object (if any) that was * dropped off the heap because it was full. This can be * the given parameter (in case it is smaller than the * full heap's minimum, and couldn't be added), or another * object that was previously the smallest value in the * heap and now has been replaced by a larger one, or null * if the queue wasn't yet full with maxSize elements. */ public T insertWithOverflow(T element) { if (size < maxSize) { add(element); return null; } else if (size > 0 && !lessThan(element, heap[1])) { T ret = heap[1]; heap[1] = element; updateTop(); return ret; } else { return element; } }
/** * Adds an Object to a PriorityQueue in log(size) time. * It returns the object (if any) that was * dropped off the heap because it was full. This can be * the given parameter (in case it is smaller than the * full heap's minimum, and couldn't be added), or another * object that was previously the smallest value in the * heap and now has been replaced by a larger one, or null * if the queue wasn't yet full with maxSize elements. */ public T insertWithOverflow(T element) { if (size < maxSize) { add(element); return null; } else if (size > 0 && !lessThan(element, heap[1])) { T ret = heap[1]; heap[1] = element; updateTop(); return ret; } else { return element; } }
/** * Adds element to the PriorityQueue in log(size) time if either * the PriorityQueue is not full, or not lessThan(element, top()). * @param element * @return true if element is added, false otherwise. */ public boolean insert(Object element){ if(size < maxSize){ put(element); return true; } else if(size > 0 && !lessThan(element, top())){ heap[1] = element; adjustTop(); return true; } else return false; }