演算法 -- 簡介
演算法演算法簡介複雜度理論系統搜尋法逼近法隨機搜尋法隨機統計法最佳化分配濃縮法遞迴法分割擊破法動態規劃法事前計算法轉換領域法轉換問題法訊息相關網站參考文獻最新修改簡體版English |
字串轉整數class Int { public static void main(String[] args) { int i = parseInt("123"); System.out.println("parseInt(123)="+i); String s = toString(392); System.out.println("toString(392)="+s); } public static int parseInt(String s) { int num = 0; for (int i=0; i<s.length(); i++) { int ni = s.charAt(i)-'0'; num = num*10 + ni; } return num; } public static String toString(int num) { String rzStr = ""; while (num > 0) { int ni = num % 10; char ci = (char) (ni+'0'); num = (num-ni) / 10; rzStr = ci+rzStr; } return rzStr; } } |
page revision: 0, last edited: 04 Nov 2010 03:16
Post preview:
Close preview