JAVA solution || easy to understand code
\nSimple gcd calculation program.\n\n\n\nclass Solution {\n    static int gcd(int n,int m){\n        if(m==0)\n            return n;\n        else\n            
\nSimple gcd calculation program.\n\n\n```\nclass Solution {\n    static int gcd(int n,int m){\n        if(m==0)\n            return n;\n        else\n            return gcd(m,n%m);\n    }\n    public boolean isGoodArray(int[] nums) {\n        int res=nums[0];\n        for(int i=1;i<nums.length;i++)\n            res=gcd(res,nums[i]);\n        return res==1;\n    }\n}\n```
['Java']