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Merged
yanglbme merged 2 commits into from
Oct 10, 2019
Merged

toString #995

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c698b43
toString
realDuYuanChao Oct 8, 2019
5b185e8
Update Queues.java
yanglbme Oct 10, 2019
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17 changes: 16 additions & 1 deletion DataStructures/Queues/Queues.java
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Original file line number Diff line number Diff line change
Expand Up @@ -130,6 +130,20 @@ public boolean isFull() {
public int getSize() {
return nItems;
}

@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("[");
for (int i = front; ; i = ++i % maxSize) {
sb.append(queueArray[i]).append(", ");
if (i == rear) {
break;
}
}
sb.replace(sb.length() - 2, sb.length(), "]");
return sb.toString();
}
}

/**
Expand All @@ -143,7 +157,7 @@ public class Queues {
*
* @param args Command line arguments
*/
public static void main(String args[]) {
public static void main(String[] args) {
Queue myQueue = new Queue(4);
myQueue.insert(10);
myQueue.insert(2);
Expand All @@ -161,5 +175,6 @@ public static void main(String args[]) {

System.out.println(myQueue.peekFront()); // Will print 2
System.out.println(myQueue.peekRear()); // Will print 7
System.out.println(myQueue.toString()); // Will print [2, 5, 3, 7]
}
}