1061-1070 1061. Lexicographically Smallest Equivalent String $\star\star$ 1062. Longest Repeating Substring $\star\star$ 1063. Number of Valid Subarrays $\star\star\star$ 1064. Fixed Point $\star$ 1065. Index Pairs of a String $\star$ 1066. Campus Bikes II $\star\star$ 1067. Digit Count in Range $\star\star\star$ 1068. Product Sales Analysis I $\star$ 1069. Product Sales Analysis II $\star$ 1070. Product Sales Analysis III $\star\star$