↓ 2 callersMethodf(int l, int r, int[] pre, HashMap<Integer, Integer> m, int[] idx)
February 2025 GFG SOLUTION/February-06.java:76
↓ 2 callersMethodgen(int[] arr, int i, int e, int s, Map<Integer, Integer> f)
January 2026 GFG SOLUTION/January-28.java:10