diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 74ea762..dc1b861 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -1,10 +1,9 @@
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+ 1580235186067
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+ 1580235186067
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@@ -234,72 +241,73 @@
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\ No newline at end of file
diff --git a/src/q6/Solution.java b/src/q6/Solution.java
new file mode 100644
index 0000000..d65b503
--- /dev/null
+++ b/src/q6/Solution.java
@@ -0,0 +1,45 @@
+package q6;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * o(n) 可用一boolean变量代替求余操作
+ */
+public class Solution {
+ public String convert(String s, int numRows) {
+ if (numRows == 1) {
+ return s;
+ }
+ int len = s.length();
+ int col = 0;
+ int n = 0;
+ List list = new ArrayList<>();
+ for (int i = 0; i < numRows; i++) {
+ StringBuffer temp = new StringBuffer();
+ list.add(temp);
+ }
+ while (n < len) {
+ int y = col % (numRows - 1);
+ if (y == 0) {
+ for (int i = 0; i < numRows && n < len; i++) {
+ list.get(i).append(s.charAt(n));
+ n++;
+ }
+ } else {
+ list.get(numRows - 1 - y).append(s.charAt(n));
+ n++;
+ }
+ col++;
+ }
+ String rs = "";
+ for (int i = 0; i < list.size(); i++) {
+ rs += list.get(i).toString();
+ }
+ return rs;
+ }
+
+ public static void main(String[] args) {
+ System.out.println(new Solution().convert("LEETCODEISHIRING", 4));
+ }
+}