@@ -24,7 +24,7 @@ private static int[] saDoubling(int[] s) {
 		for(int i = 0;i < n;i++){
 			sa[i] = i;
 		}
-		int[] rnk = s;
+		int[] rnk = java.util.Arrays.copyOf(s, n);
 		int[] tmp = new int[n];
 
 		for (int k = 1; k < n; k *= 2) {
Original file line number	Diff line number	Diff line change
`@@ -24,7 +24,7 @@ private static int[] saDoubling(int[] s) {`
`24`	`24`	`for(int i = 0;i < n;i++){`
`25`	`25`	`sa[i] = i;`
`26`	`26`	`}`
`27`		`- int[] rnk = s;`
	`27`	`+ int[] rnk = java.util.Arrays.copyOf(s, n);`
`28`	`28`	`int[] tmp = new int[n];`
`29`	`29`
`30`	`30`	`for (int k = 1; k < n; k *= 2) {`