Merge pull request #604 from Smarticles101/transpose

transpose: add to track

config.json

       ]
     },
     {
+      "slug": "transpose",
+      "difficulty": 6,
+      "topics": [
+
+      ]
+    },
+    {
       "slug": "beer-song",
       "difficulty": 6,
       "topics": [
       "slug": "list-ops",
       "difficulty": 1,
       "topics": [
-
+      
       ]
     }
   ],

exercises/settings.gradle

 include 'strain'
 include 'sublist'
 include 'sum-of-multiples'
+include 'transpose'
 include 'triangle'
 include 'trinary'
 include 'twelve-days'

exercises/transpose/build.gradle

+apply plugin: "java"
+apply plugin: "eclipse"
+apply plugin: "idea"
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  testCompile "junit:junit:4.12"
+}
+test {
+  testLogging {
+    exceptionFormat = 'full'
+    events = ["passed", "failed", "skipped"]
+  }
+}

exercises/transpose/src/example/java/Transpose.java

+public class Transpose {
+    public String transpose(String toTranspose) {
+
+        StringBuilder transposedForm = new StringBuilder();
+        String[] rows = toTranspose.split("\n");
+
+        int maxRowSize = 0;
+
+        for (int i = 0; i < rows.length; i++) {
+            if (rows[i].length() > maxRowSize) {
+                maxRowSize = rows[i].length();
+            }
+        }
+
+        padRows(rows);
+
+        for (int newRowOldCol = 0; newRowOldCol < maxRowSize; newRowOldCol++) {
+            for (int newColOldRow = 0; newColOldRow < rows.length; newColOldRow++) {
+                if (newRowOldCol < rows[newColOldRow].length()) {
+                    transposedForm.append(rows[newColOldRow].charAt(newRowOldCol));
+                }
+            }
+
+            if (newRowOldCol != maxRowSize - 1) {
+                transposedForm.append("\n");
+            }
+        }
+
+        return transposedForm.toString();
+    }
+
+    private void padRows(String[] rows) {
+        for (int i = 0; i < rows.length; i++) {
+            for (int j = i; j < rows.length; j++) {
+                if(rows[j].length() > rows[i].length()) {
+                    rows[i] = String.format("%-" + rows[j].length() + "s", rows[i]);
+                }
+            }
+        }
+    }
+}

exercises/transpose/src/test/java/TransposeTest.java

+import org.junit.Ignore;
+import org.junit.Test;
+import org.junit.Before;
+
+import static org.junit.Assert.assertEquals;
+
+public class TransposeTest {
+    private Transpose transpose;
+
+    @Before
+    public void setup() {
+        transpose = new Transpose();
+    }
+
+    @Test
+    public void emptyString() {
+        String input = "";
+
+        String expected = "";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void twoCharsInARow() {
+        String input = "A1";
+
+        String expected = "A" +
+                          "\n1";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void twoCharsInAColumn() {
+        String input = "A\n" +
+                       "1";
+
+        String expected = "A1";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void simpleMatrix() {
+        String input = "ABC\n" +
+                       "123";
+
+        String expected = "A1\n" +
+                          "B2\n" +
+                          "C3";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void singleLine() {
+        String input = "Single line.";
+
+        String expected = "S\n" +
+                          "i\n" +
+                          "n\n" +
+                          "g\n" +
+                          "l\n" +
+                          "e\n" +
+                          " \n" +
+                          "l\n" +
+                          "i\n" +
+                          "n\n" +
+                          "e\n" +
+                          ".";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void firstLineLongerThanSecond() {
+        String input = "The fourth line.\n" +
+                       "The fifth line.";
+
+        String expected = "TT\n" +
+                          "hh\n" +
+                          "ee\n" +
+                          "  \n" +
+                          "ff\n" +
+                          "oi\n" +
+                          "uf\n" +
+                          "rt\n" +
+                          "th\n" +
+                          "h \n" +
+                          " l\n" +
+                          "li\n" +
+                          "in\n" +
+                          "ne\n" +
+                          "e.\n" +
+                          ".";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void secondLineLongerThanFirst() {
+        String input = "The first line.\n" +
+                       "The second line.";
+
+        String expected = "TT\n" +
+                          "hh\n" +
+                          "ee\n" +
+                          "  \n" +
+                          "fs\n" +
+                          "ie\n" +
+                          "rc\n" +
+                          "so\n" +
+                          "tn\n" +
+                          " d\n" +
+                          "l \n" +
+                          "il\n" +
+                          "ni\n" +
+                          "en\n" +
+                          ".e\n" +
+                          " .";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void square() {
+        String input = "HEART\n" +
+                       "EMBER\n" +
+                       "ABUSE\n" +
+                       "RESIN\n" +
+                       "TREND";
+
+        String expected = "HEART\n" +
+                          "EMBER\n" +
+                          "ABUSE\n" +
+                          "RESIN\n" +
+                          "TREND";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void rectangle() {
+        String input = "FRACTURE\n" +
+                       "OUTLINED\n" +
+                       "BLOOMING\n" +
+                       "SEPTETTE";
+
+        String expected = "FOBS\n" +
+                          "RULE\n" +
+                          "ATOP\n" +
+                          "CLOT\n" +
+                          "TIME\n" +
+                          "UNIT\n" +
+                          "RENT\n" +
+                          "EDGE";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void triangle() {
+        String input = "T\n" +
+                       "EE\n" +
+                       "AAA\n" +
+                       "SSSS\n" +
+                       "EEEEE\n" +
+                       "RRRRRR";
+
+        String expected = "TEASER\n" +
+                          " EASER\n" +
+                          "  ASER\n" +
+                          "   SER\n" +
+                          "    ER\n" +
+                          "     R";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+
+    @Test
+    @Ignore("Remove to run test")
+    public void manyLines() {
+        String input = "Chor. Two households, both alike in dignity,\n" +
+                       "In fair Verona, where we lay our scene,\n" +
+                       "From ancient grudge break to new mutiny,\n" +
+                       "Where civil blood makes civil hands unclean.\n" +
+                       "From forth the fatal loins of these two foes\n" +
+                       "A pair of star-cross'd lovers take their life;\n" +
+                       "Whose misadventur'd piteous overthrows\n" +
+                       "Doth with their death bury their parents' strife.\n" +
+                       "The fearful passage of their death-mark'd love,\n" +
+                       "And the continuance of their parents' rage,\n" +
+                       "Which, but their children's end, naught could remove,\n" +
+                       "Is now the two hours' traffic of our stage;\n" +
+                       "The which if you with patient ears attend,\n" +
+                       "What here shall miss, our toil shall strive to mend.";
+
+        String expected = "CIFWFAWDTAWITW\n" +
+                          "hnrhr hohnhshh\n" +
+                          "o oeopotedi ea\n" +
+                          "rfmrmash  cn t\n" +
+                          ".a e ie fthow \n" +
+                          " ia fr weh,whh\n" +
+                          "Trnco miae  ie\n" +
+                          "w ciroitr btcr\n" +
+                          "oVivtfshfcuhhe\n" +
+                          " eeih a uote  \n" +
+                          "hrnl sdtln  is\n" +
+                          "oot ttvh tttfh\n" +
+                          "un bhaeepihw a\n" +
+                          "saglernianeoyl\n" +
+                          "e,ro -trsui ol\n" +
+                          "h uofcu sarhu \n" +
+                          "owddarrdan o m\n" +
+                          "lhg to'egccuwi\n" +
+                          "deemasdaeehris\n" +
+                          "sr als t  ists\n" +
+                          ",ebk 'phool'h,\n" +
+                          "  reldi ffd   \n" +
+                          "bweso tb  rtpo\n" +
+                          "oea ileutterau\n" +
+                          "t kcnoorhhnatr\n" +
+                          "hl isvuyee'fi \n" +
+                          " atv es iisfet\n" +
+                          "ayoior trr ino\n" +
+                          "l  lfsoh  ecti\n" +
+                          "ion   vedpn  l\n" +
+                          "kuehtteieadoe \n" +
+                          "erwaharrar,fas\n" +
+                          "   nekt te  rh\n" +
+                          "ismdsehphnnosa\n" +
+                          "ncuse ra-tau l\n" +
+                          " et  tormsural\n" +
+                          "dniuthwea'g t \n" +
+                          "iennwesnr hsts\n" +
+                          "g,ycoi tkrttet\n" +
+                          "n ,l r s'a anr\n" +
+                          "i  ef  'dgcgdi\n" +
+                          "t  aol   eoe,v\n" +
+                          "y  nei sl,u; e\n" +
+                          ",  .sf to l   \n" +
+                          "     e rv d  t\n" +
+                          "     ; ie    o\n" +
+                          "       f, r   \n" +
+                          "       e  e  m\n" +
+                          "       .  m  e\n" +
+                          "          o  n\n" +
+                          "          v  d\n" +
+                          "          e  .\n" +
+                          "          ,";
+
+        assertEquals(expected, transpose.transpose(input));
+    }
+}