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Commit9c79a76

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add a solution for 767
1 parente67e2f1 commit9c79a76

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2 files changed

+75
-26
lines changed

2 files changed

+75
-26
lines changed

‎src/main/java/com/fishercoder/solutions/_767.java

Lines changed: 43 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -58,4 +58,47 @@ public CustChar(Character c, int count) {
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}
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}
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}
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publicstaticclassSolution2 {
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/**
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* My completely original solution on 12/24/2021.
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*/
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publicStringreorganizeString(Strings) {
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Map<Character,Integer>map =newHashMap<>();
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for (charc :s.toCharArray()) {
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map.put(c,map.getOrDefault(c,0) +1);
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}
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PriorityQueue<Tuple>maxHeap =newPriorityQueue<>((a,b) ->b.count -a.count);
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for (charc :map.keySet()) {
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maxHeap.add(newTuple(c,map.get(c)));
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}
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StringBuildersb =newStringBuilder("1");
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while (!maxHeap.isEmpty()) {
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PriorityQueue<Tuple>tmp =newPriorityQueue<>((a,b) ->b.count -a.count);
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Tuplecurr =maxHeap.poll();
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while (sb.length() !=0 &&sb.charAt(sb.length() -1) ==curr.c && !maxHeap.isEmpty()) {
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tmp.offer(curr);
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curr =maxHeap.poll();
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}
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if (curr.c !=sb.charAt(sb.length() -1)) {
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sb.append(curr.c);
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}
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maxHeap.addAll(tmp);
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if (curr.count >1) {
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maxHeap.offer(newTuple(curr.c,curr.count -1));
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}
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}
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returnsb.substring(1).length() !=s.length() ?"" :sb.substring(1);
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}
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classTuple {
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charc;
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intcount;
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publicTuple(charc,intcount) {
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this.c =c;
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this.count =count;
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}
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}
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}
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}

‎src/test/java/com/fishercoder/_767Test.java

Lines changed: 32 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -7,30 +7,36 @@
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importstaticorg.junit.Assert.assertEquals;
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publicclass_767Test {
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privatestatic_767.Solution1solution1;
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@BeforeClass
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publicstaticvoidsetup() {
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solution1 =new_767.Solution1();
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}
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@Test
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publicvoidtest1() {
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assertEquals("aba",solution1.reorganizeString("aab"));
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}
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@Test
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publicvoidtest2() {
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assertEquals("",solution1.reorganizeString("aaab"));
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}
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@Test
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publicvoidtest3() {
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assertEquals("bababab",solution1.reorganizeString("aaabbbb"));
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}
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@Test
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publicvoidtest4() {
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assertEquals("vovlv",solution1.reorganizeString("vvvlo"));
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}
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privatestatic_767.Solution1solution1;
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privatestatic_767.Solution2solution2;
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@BeforeClass
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publicstaticvoidsetup() {
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solution1 =new_767.Solution1();
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solution2 =new_767.Solution2();
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}
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@Test
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publicvoidtest1() {
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assertEquals("aba",solution1.reorganizeString("aab"));
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assertEquals("aba",solution2.reorganizeString("aab"));
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}
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@Test
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publicvoidtest2() {
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assertEquals("",solution1.reorganizeString("aaab"));
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assertEquals("",solution2.reorganizeString("aaab"));
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}
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@Test
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publicvoidtest3() {
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assertEquals("bababab",solution1.reorganizeString("aaabbbb"));
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assertEquals("bababab",solution2.reorganizeString("aaabbbb"));
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}
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@Test
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publicvoidtest4() {
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assertEquals("vovlv",solution1.reorganizeString("vvvlo"));
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assertEquals("vovlv",solution2.reorganizeString("vvvlo"));
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}
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}

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