A great and quite unconventional book on Algorithms is "INTRODUCTION TO ALGORITHMS - A Creative Approach" by Udi Manber. After leaving academia the author was h

A great and quite unconventional book on Algorithms is "INTRODUCTION TO ALGORITHMS - A Creative Approach" by Udi Manber. After leaving academia the author was hired first by Amazon (A9.com) and then by Google. At some point around 2010 he was responsible for all search products at Google [0]. The book not only describes the algorithms per se, but also teaches how to think about the algorithms and the problems they are solving. I enjoyed it very much as a complimentary reading to the classic Knuth volumes. [0] https://en.wikipedia.org/wiki/Udi_Manber https://en.wikipedia.org/wiki/Udi_Manber