动态规划(DP)
2014-11-13 15:24
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动态规划,Dynamic programming,不是Dynamic planning ...
将问题分成若干子问题,前面的解为后面的解所用,注意逆向推倒,找出递推公式,经典的01背包问题,晚点实现一下,这里搞一个LeetCode上面的题放着记录一下
神马求二项式系数,斐波拉契...都可以用动态规划来实现
Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
01背包问题,待写...
将问题分成若干子问题,前面的解为后面的解所用,注意逆向推倒,找出递推公式,经典的01背包问题,晚点实现一下,这里搞一个LeetCode上面的题放着记录一下
神马求二项式系数,斐波拉契...都可以用动态规划来实现
Climbing Stairs
You are climbing a stair case. It takes n steps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
public class Solution { public int climbStairs(int n) { int steps[] = new int[n + 1]; for(int i = 0; i <= n; i++){ if(0 == i || 1 == i) steps[i] = 1; else{ steps[i] = steps[i - 1] + steps[i - 2]; } } return steps ; } }
01背包问题,待写...
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