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Commit76d2c52

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add a solution for 994
1 parenta02e433 commit76d2c52

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2 files changed

+50
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2 files changed

+50
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‎src/main/java/com/fishercoder/solutions/_994.java

Lines changed: 47 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -93,4 +93,51 @@ public int orangesRotting(int[][] grid) {
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returnfresh.isEmpty() ?min : -1;
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}
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}
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publicstaticclassSolution3 {
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/**
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* My original solution on 10/29/2021.
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*/
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publicintorangesRotting(int[][]grid) {
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intm =grid.length;
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intn =grid[0].length;
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intfreshOranges =0;
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Queue<int[]>queue =newLinkedList<>();
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boolean[][]visited =newboolean[m][n];
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for (inti =0;i <m;i++) {
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for (intj =0;j <n;j++) {
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if (grid[i][j] ==2) {
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queue.offer(newint[]{i,j});
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visited[i][j] =true;
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}elseif (grid[i][j] ==1) {
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freshOranges++;
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}
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}
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}
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intmins =0;
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int[]directions =newint[]{0,1,0, -1,0};
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while (!queue.isEmpty()) {
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intsize =queue.size();
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booleanhasOneToRot =false;
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for (inti =0;i <size;i++) {
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int[]curr =queue.poll();
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for (intj =0;j <directions.length -1;j++) {
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intnewx =directions[j] +curr[0];
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intnewy =directions[j +1] +curr[1];
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if (newx >=0 &&newx <m &&newy >=0 &&newy <n &&grid[newx][newy] ==1 && !visited[newx][newy]) {
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freshOranges--;
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grid[newx][newy] =2;
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visited[newx][newy] =true;
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queue.offer(newint[]{newx,newy});
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hasOneToRot =true;
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}
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}
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}
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if (hasOneToRot) {
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mins++;
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}
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}
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returnfreshOranges ==0 ?mins : -1;
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}
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}
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}

‎src/test/java/com/fishercoder/_994Test.java

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -10,12 +10,14 @@
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publicclass_994Test {
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privatestatic_994.Solution1solution1;
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privatestatic_994.Solution2solution2;
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privatestatic_994.Solution3solution3;
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privatestaticint[][]grid;
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@BeforeClass
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publicstaticvoidsetUp() {
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solution1 =new_994.Solution1();
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solution2 =new_994.Solution2();
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solution3 =new_994.Solution3();
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}
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@Test
@@ -66,6 +68,7 @@ public void test5() {
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publicvoidtest6() {
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grid =CommonUtils.convertLeetCodeIrregularLengths2DArrayInputIntoJavaArray("[2],[1]");
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assertEquals(1,solution2.orangesRotting(grid));
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assertEquals(1,solution3.orangesRotting(grid));
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}
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}

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