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@ -17,7 +17,6 @@ public class LongestIncreasingSubsequence {
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System.out.println(LIS(arr));
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System.out.println(LIS(arr));
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System.out.println(findLISLen(arr));
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System.out.println(findLISLen(arr));
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sc.close();
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sc.close();
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}
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}
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private static int upperBound(int[] ar, int l, int r, int key) {
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private static int upperBound(int[] ar, int l, int r, int key) {
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@ -70,8 +69,7 @@ public class LongestIncreasingSubsequence {
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for (int i = 1; i < size; i++) {
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for (int i = 1; i < size; i++) {
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int index = binarySearchBetween(arr, lis, a[i]);
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int index = binarySearchBetween(arr, lis, a[i]);
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arr[index] = a[i];
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arr[index] = a[i];
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if (index > lis)
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if (index > lis) lis++;
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lis++;
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}
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}
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return lis;
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return lis;
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}
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}
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@ -79,19 +77,13 @@ public class LongestIncreasingSubsequence {
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private static int binarySearchBetween(int[] t, int end, int key) {
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private static int binarySearchBetween(int[] t, int end, int key) {
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int left = 0;
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int left = 0;
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int right = end;
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int right = end;
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if (key < t[0])
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if (key < t[0]) return 0;
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return 0;
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if (key > t[end]) return end + 1;
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if (key > t[end])
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return end + 1;
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while (left < right - 1) {
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while (left < right - 1) {
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int middle = (left + right) / 2;
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int middle = (left + right) / 2;
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if (t[middle] < key)
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if (t[middle] < key) left = middle;
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left = middle;
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else right = middle;
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else
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right = middle;
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}
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}
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return right;
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return right;
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}
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}
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}
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}
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