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42 lines (41 loc) · 1.08 KB
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Copy pathZigZag.java
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42 lines (41 loc) · 1.08 KB
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public class ZigZag{
public static void main(String[] argvs){
ZigZag zz = new ZigZag();
System.out.println(zz.convert("PAYPALISHIRING", 3));
}
public String convert(String s, int numRows){
if(numRows <= 1){
return s;
}
char[] r = new char[s.length()];
int gap = 2 * (numRows - 1);
int i = 0, j = 0;
while(j < s.length()){
r[i] = s.charAt(j);
j += gap;
i ++;
}
for(int k = 1; k < numRows - 1; k++){
int dis1 = gap - 2 * k;
int dis2 = gap - dis1;
j = k;
while(j < s.length()){
r[i] = s.charAt(j);
j += dis1;
i ++;
if(j < s.length()){
r[i] = s.charAt(j);
j += dis2;
i ++;
}
}
}
j = numRows - 1;
while(j < s.length()){
r[i] = s.charAt(j);
j += gap;
i ++;
}
return String.valueOf(r);
}
}