publicclassProblem4{publicstaticbooleanisPalindrome(longval){booleanisPalindrome=true;Stringstr=Long.toString(val);intlen=str.length();inti=0;while(isPalindrome&&i<=(len-1)/2){isPalindrome=str.charAt(i)==str.charAt(len-1-i);i++;}returnisPalindrome;}publicstaticvoidmain(String[]args){inti=999;longlargest=1;Stringstr="";longval=1;while(i>=100){intj=i;while(j>=100){val=i*j;if(isPalindrome(val)&&largest<val){largest=val;str=i+" x "+j;}isPalindrome(val);j--;}i--;}System.out.println(str+"= "+largest);}}
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