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Commite67e2f1

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add 1472
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‎README.md

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@@ -276,6 +276,7 @@ _If you like this project, please leave me a star._ ★
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|1476|[Subrectangle Queries](https://leetcode.com/problems/subrectangle-queries/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1476.java)||Medium|Array|
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|1475|[Final Prices With a Special Discount in a Shop](https://leetcode.com/problems/final-prices-with-a-special-discount-in-a-shop/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1475.java)||Easy|Array|
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|1474|[Delete N Nodes After M Nodes of a Linked List](https://leetcode.com/problems/delete-n-nodes-after-m-nodes-of-a-linked-list/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1474.java)||Easy|LinkedList|
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|1472|[Design Browser History](https://leetcode.com/problems/design-browser-history/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1472.java)||Medium|Array, Design|
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|1471|[The k Strongest Values in an Array](https://leetcode.com/problems/the-k-strongest-values-in-an-array/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1471.java)||Medium|Array, Sort|
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|1470|[Shuffle the Array](https://leetcode.com/problems/shuffle-the-array/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1470.java),[C++](../master/cpp/_1470.cpp)||Easy|Array|
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|1469|[Find All The Lonely Nodes](https://leetcode.com/problems/find-all-the-lonely-nodes/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1469.java)||Easy|Tree, DFS|
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packagecom.fishercoder.solutions;
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importjava.util.ArrayList;
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importjava.util.List;
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publicclass_1472 {
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publicstaticclassSolution1 {
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publicstaticclassBrowserHistory {
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intcurr;
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List<String>history;
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publicBrowserHistory(Stringhomepage) {
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history =newArrayList<>();
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history.add(homepage);
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curr =0;
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}
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publicvoidvisit(Stringurl) {
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curr++;
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history =history.subList(0,curr);
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history.add(url);
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}
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publicStringback(intsteps) {
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curr -=steps;
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if (curr <0) {
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curr =0;
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}
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returnhistory.get(curr);
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}
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publicStringforward(intsteps) {
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curr +=steps;
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if (history.size() <=curr) {
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curr =history.size() -1;
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}
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returnhistory.get(curr);
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}
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}
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}
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}
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packagecom.fishercoder;
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importcom.fishercoder.solutions._1472;
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importorg.junit.Test;
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importstaticorg.junit.Assert.assertEquals;
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publicclass_1472Test {
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privatestatic_1472.Solution1.BrowserHistorybrowserHistory;
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@Test
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publicvoidtest1() {
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browserHistory =new_1472.Solution1.BrowserHistory("leetcode.com");
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browserHistory.visit("google.com");
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browserHistory.visit("facebook.com");
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browserHistory.visit("youtube.com");
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assertEquals("facebook.com",browserHistory.back(1));
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assertEquals("google.com",browserHistory.back(1));
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assertEquals("facebook.com",browserHistory.forward(1));
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browserHistory.visit("linkedin.com");
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assertEquals("linkedin.com",browserHistory.forward(2));
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assertEquals("google.com",browserHistory.back(2));
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assertEquals("leetcode.com",browserHistory.back(7));
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}
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}

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