@@ -26,7 +26,7 @@ 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
`@@ -26,7 +26,7 @@ private static int[] saDoubling(int[] s) {`
`26`	`26`	`for (int i = 0; i < n; i++) {`
`27`	`27`	`_sa[i] = i;`
`28`	`28`	`}`
`29`		`- int[] rnk = s;`
	`29`	`+ int[] rnk = java.util.Arrays.copyOf(s, n);`
`30`	`30`	`int[] tmp = new int[n];`
`31`	`31`
`32`	`32`	`for (int k = 1; k < n; k *= 2) {`