class Solution { public int[] countBits(int num) { int[] dp = new int[num+1]; dp[0] = 0; for(int i = 1; i <= num; i++) { dp[i] = dp[i/2] + i%2; } return dp; }}class Solution { public int[] countBits(int num) { int[] dp = new int[num+1]; dp[0] = 0; for(int i = 1; i <= num; i++) { dp[i] = dp[i/2] + i%2; } return dp; }}