| # | Title | Solutions | Video | Difficulty | Tag

|-----|----------------|---------------|--------|-------------|-------------

|2075|[Decode the Slanted Ciphertext](https://leetcode.com/problems/decode-the-slanted-ciphertext/)|[Java](../master/src/main/java/com/fishercoder/solutions/_2075.java)||Medium||

|2074|[Reverse Nodes in Even Length Groups](https://leetcode.com/problems/reverse-nodes-in-even-length-groups/)|[Java](../master/src/main/java/com/fishercoder/solutions/_2074.java)||Medium||

|2073|[Time Needed to Buy Tickets](https://leetcode.com/problems/time-needed-to-buy-tickets/)|[Java](../master/src/main/java/com/fishercoder/solutions/_2073.java)||Easy||

|2070|[Most Beautiful Item for Each Query](https://leetcode.com/problems/most-beautiful-item-for-each-query/)|[Java](../master/src/main/java/com/fishercoder/solutions/_2070.java)||Medium||

packagecom.fishercoder.solutions;

publicclass_2075 {

publicstaticclassSolution1 {

publicStringdecodeCiphertext(StringencodedText,introws) {

if (rows ==1) {

returnencodedText;

}

inttotal =encodedText.length();

intcols =total /rows;

char[][]grid =newchar[rows][cols];

intindex =0;

for (inti =0;i <rows;i++) {

for (intj =0;j <cols;j++) {

grid[i][j] =encodedText.charAt(index++);

}

}

StringBuildersb =newStringBuilder();

intcolIndex =0;

while (colIndex <cols) {

for (intj =colIndex,i =0;j <cols &&i <rows;j++,i++) {

sb.append(grid[i][j]);

}

colIndex++;

}

inti =sb.length() -1;

while (i >=0 &&sb.charAt(i) ==' ') {

i--;

}

returnsb.substring(0,i +1);

}

}

}

packagecom.fishercoder;

importcom.fishercoder.solutions._2075;

importorg.junit.BeforeClass;

importorg.junit.Test;

importstaticorg.junit.Assert.assertEquals;

publicclass_2075Test {

privatestatic_2075.Solution1solution1;

privatestaticStringencodedText;

privatestaticintrows;

privatestaticStringexpected;

publicstaticvoidsetup() {

solution1 =new_2075.Solution1();

}

publicvoidtest1() {

encodedText ="ch ie pr";

rows =3;

expected ="cipher";

assertEquals(expected,solution1.decodeCiphertext(encodedText,rows));

}

publicvoidtest2() {

encodedText ="iveo eed l te olc";

rows =4;

expected ="i love leetcode";

assertEquals(expected,solution1.decodeCiphertext(encodedText,rows));

}

publicvoidtest3() {

encodedText ="coding";

rows =1;

expected ="coding";

assertEquals(expected,solution1.decodeCiphertext(encodedText,rows));

}

publicvoidtest4() {

encodedText =" b ac";

rows =2;

expected =" abc";

assertEquals(expected,solution1.decodeCiphertext(encodedText,rows));

}

}