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Archive: August 20, 2015

Ugly Number II

public int nthUglyNumber(int n) { int[] ugly = new int[n]; ugly[0] = 1; int m2 = 1; int m3 = 1; int m5 = 1; int f2 = 2; int f3 = 3; int f5 = 5; for(int i = 1; i < n; i++) { int min = Math.min(Math.min(f2,f3),f5); ugly[i] = min; if(min == […]

Ugly Number

public boolean isUgly(int num) { if(num == 0) return false; else if(num == 1) return true; else if(num % 2 == 0) return isUgly(num / 2); else if(num % 3 == 0) return isUgly(num / 3); else if(num % 5 == 0) return isUgly(num / 5); else return false; }

书脊

这青苔碧瓦堆, 俺曾睡风流觉, 将五十年兴亡看饱.

August 2015
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