【LintCode】1613. 最高頻率的IP

1613. 最高頻率的IP

給定一個字符串數組lines, 每一個元素代表一個IP地址，找到出現頻率最高的IP。

樣例

樣例1:

輸入 = ["192.168.1.1","192.118.2.1","192.168.1.1"]
輸出  "192.168.1.1"

樣例2:

輸入 = ["192.168.1.1","192.118.2.1","192.168.1.1","192.118.2.1","192.118.2.1"]
輸出 "192.118.2.1"

注意事項

給定數據只有一個頻率最高的IP

public class Solution {
    /**
     * @param ipLines: ip  address
     * @return: return highestFrequency ip address
     */
    public String highestFrequency(String[] ipLines) {
        // Write your code here
        int a[] = new int[ipLines.length];
        for(int i =0;i<ipLines.length;i++){
            int sum = 0;
            for(int j = 0;j<ipLines.length;j++){
                if(ipLines[i].equals(ipLines[j])){
                    sum++;
                }
            }
            a[i] = sum;
            //System.out.println(sum);
        }
        
        String ip;
        int temp;
        for(int x=0;x<ipLines.length;x++){
            for(int y=x+1;y<ipLines.length;y++){
                if(a[x]>=a[y]){
                    ip = ipLines[x];
                    ipLines[x] = ipLines[y];
                    ipLines[y] = ip;
                    
                    temp = a[x];
                    a[x] = a[y];
                    a[y] = temp;
                }
                
            }
            
        }
        for(int z=0;z<a.length;z++)
         System.out.print(a[z]+" ");
        
        return ipLines[ipLines.length-1];
        
    }
}