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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                問題描述 123321是一個非常特殊的數,它從左邊讀和從右邊讀是一樣的。 輸入一個正整數n, 編程求所有這樣的五位和六位十進制數,滿足各位數字之和等于n 。 輸入格式 輸入一行,包含一個正整數n。 輸出格式 按從小到大的順序輸出滿足條件的整數,每個整數占一行。 樣例輸入 52 樣例輸出 899998 989989 998899 數據規模和約定 1<=n<=54。 ~~~ //思路是把這個數當成字符串翻轉,翻轉后和原字符串相同即可 import java.util.Scanner; public class Main{ public static void main(String[] args) { int n = 0; Scanner input = new Scanner(System.in); n = input.nextInt(); for (int i = 10000; i < 1000000; i++) { if (translate(i,n)) { System.out.println(i); } } } private static boolean translate(int i,int n){ String temp = String.valueOf(i); if (sum(temp) != n) { return false; } StringBuilder builder = new StringBuilder(temp); builder = builder.reverse(); if (temp.equals(builder.toString())) { return true; } return false; } private static int sum(String temp){ int sum = 0; for (int i = 0; i < temp.length(); i++) { sum += (temp.charAt(i)-'0'); } return sum; } } ~~~
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