UVa 1339 - Ancient Cipher

本文介绍了一种通过统计和排序字符频率来判断两个字符串是否可通过重排及字母映射变得相等的方法,并提供了一个具体的Java实现案例。

又一次读错题意,导致WA。

题目大意 :
判断两个字符串是否可以通过重排和字母间的映射变成相等的字符串。

思路 : 一个较好的思路是先统计两个字符串中各个字母出现的次数,然后把两个计数数组排序,如果这两个排序后的计数数组相等的话。判断为YES,否则为NO。

Java代码 :

import java.util.*;

public class Main1339 {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s1, s2;
		char[] ch1 = new char[105];
		char[] ch2 = new char[105];
		int[] cnt1 = new int[26];
	    int[] cnt2 = new int[26];
		while(scan.hasNext()) {
			s1 = scan.next();
		    s2 = scan.next();
		    Arrays.fill(cnt1, 0);
		    Arrays.fill(cnt2, 0);
			int len = s1.length();
			ch1 = s1.toCharArray();
			ch2 = s2.toCharArray();
			for(int i=0; i<len; i++) {
				cnt1[ch1[i]-'A'] ++;
				cnt2[ch2[i]-'A'] ++;
			}
			Arrays.sort(cnt1);
			Arrays.sort(cnt2);
			int flag = 1;
			for(int i=0; i<26; i++) {
				if(cnt1[i] != cnt2[i]) {
					flag = 0;
					break;
				}
			}
			if(flag == 0) 
				System.out.println("NO");
			else
				System.out.println("YES");
		}

	} 

}


 

static void ath10k_set_key_h_def_keyidx(struct ath10k *ar, struct ath10k_vif *arvif, enum set_key_cmd cmd, struct ieee80211_key_conf *key) { u32 vdev_param = arvif->ar->wmi.vdev_param->def_keyid; int ret; /* 10.1 firmware branch requires default key index to be set to group * key index after installing it. Otherwise FW/HW Txes corrupted * frames with multi-vif APs. This is not required for main firmware * branch (e.g. 636). * * This is also needed for 636 fw for IBSS-RSN to work more reliably. * * FIXME: It remains unknown if this is required for multi-vif STA * interfaces on 10.1. */ if (arvif->vdev_type != WMI_VDEV_TYPE_AP && arvif->vdev_type != WMI_VDEV_TYPE_IBSS) return; if (key->cipher == WLAN_CIPHER_SUITE_WEP40) return; if (key->cipher == WLAN_CIPHER_SUITE_WEP104) return; if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) return; if (cmd != SET_KEY) return; ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, key->keyidx); if (ret) ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n", arvif->vdev_id, ret); } static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key) { struct ath10k *ar = hw->priv; struct ath10k_vif *arvif = (void *)vif->drv_priv; struct ath10k_sta *arsta; struct ath10k_peer *peer; const u8 *peer_addr; bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 || key->cipher == WLAN_CIPHER_SUITE_WEP104; int ret = 0; int ret2; u32 flags = 0; u32 flags2; /* this one needs to be done in software */ if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256 || key->cipher == WLAN_CIPHER_SUITE_BIP_CMAC_256) return 1; 是这两个函数吗
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04-09
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