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Find the least number of perfect square numbers (1, 4, 9, 16, 25 …) which sum to the given integer n. For example, given n = 5, return 2 …
After robbing those houses on that street, the thief has found himself a new place for his thievery so that he will not get too much attention. This time, …
Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1’s in their binary representation and …
The thief has found himself a new place for his thievery again. There is only one entrance to this area, called the “root.” Besides the root, each house has …
The Matrix Chain Multiplication Problem is the classic example for Dynamic Programming. If there are three matrices: A, B and C. The total number of multiplication for (A*B)*C and …