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Update 0006-zigzag-conversion.java

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Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,23 @@`
	`1`	`+classSolution {`
	`2`	`+publicStringconvert(Strings,intnumRows) {`
	`3`	`+if (numRows ==1)`
	`4`	`+returns;`
	`5`	`+`
	`6`	`+StringBuilderres =newStringBuilder();`
	`7`	`+intincrement =2 * (numRows -1);`
	`8`	`+`
	`9`	`+for (intr =0;r <numRows;r++) {`
	`10`	`+for (inti =r;i <s.length();i +=increment) {`
	`11`	`+res.append(s.charAt(i));`
	`12`	`+if (r >0 &&r <numRows -1 &&i +increment -2 *r <s.length()) {`
	`13`	`+res.append(s.charAt(i +increment -2 *r));`
	`14`	`+ }`
	`15`	`+ }`
	`16`	`+ }`
	`17`	`+returnres.toString();`
	`18`	`+ }`
	`19`	`+}`
	`20`	`+--------------------------------------------------------------------------------------------------------------------------`
`1`	`21`	`//We check whether we are at the diagonal or not using a boolean and increment the pointer accordingly.`
`2`	`22`
`3`	`23`	`classSolution {`

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