classSolution {publicString removeDuplicateLetters(String s) {//1.define a map , store last position of charint[] map =newint[26];for(inti=0;i<s.length();i++) map[s.charAt(i)-'a']=i;//2.define a set to filter visitedSet<Character> set =newHashSet();//3.iterateStack<Charact...
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We show that the comparison results for a backward SDE with jumps established in Royer (Stoch. Process. Appl 116: 1358–1376, 2006) and Yin and Mao (J. Math. Anal. Appl 346: 345–358, 2008) hold under more simplified conditions. Moreover, we prove existence and uniqueness allowing the...
Assuming there is no chemical heterogeneity on the surface and the Hamaker constant between the particle and plate surfaces is not changing, the individual un-retarded VDW interaction energy between two spheres (an approaching particle and a roughness element conceptualized as a stack of spheres; Fig...
iPhone models, or I simply did not notice it. It should be noted that skipping the initial division may result in an overflow if the timebase numerator is large. For those who are interested, there is a comprehensive resource available at this link: https://stackoverflow.com/a/23378064/...