Commit9670149

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Merge pull requestneetcode-gh#1977 from Mahim1997/dev/67_Java

67. Add Binary

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	`1`	`+classSolution {`
	`2`	`+publicStringaddBinary(Stringa,Stringb) {`
	`3`	`+// Go from right to left`
	`4`	`+intlen1 =a.length();`
	`5`	`+intlen2 =b.length();`
	`6`	`+`
	`7`	`+intminLen =Math.min(len1,len2);`
	`8`	`+intmaxLen =Math.max(len1,len2);`
	`9`	`+`
	`10`	`+intindex1 =len1 -1;`
	`11`	`+intindex2 =len2 -1;`
	`12`	`+`
	`13`	`+StringBuilderbld =newStringBuilder();`
	`14`	`+booleancarry =false;`
	`15`	`+`
	`16`	`+while((index1 >=0) \|\| (index2 >=0) \|\|carry) {`
	`17`	`+charc1 = (index1 >=0) ?a.charAt(index1) :'0';`
	`18`	`+charc2 = (index2 >=0) ?b.charAt(index2) :'0';`
	`19`	`+`
	`20`	`+charsum;`
	`21`	`+if((c1 =='0') && (c2 =='0')) {// Both zeros`
	`22`	`+sum =carry ?'1' :'0';`
	`23`	`+carry =false;`
	`24`	`+ }`
	`25`	`+elseif((c1 =='1') && (c2 =='1')) {// Both ones`
	`26`	`+sum =carry ?'1' :'0';`
	`27`	`+carry =true;`
	`28`	`+ }`
	`29`	`+else {// Any one with a one`
	`30`	`+sum =carry ?'0' :'1';`
	`31`	`+// carry will be forwarded`
	`32`	`+ }`
	`33`	`+bld.append(sum);`
	`34`	`+`
	`35`	`+index1--;`
	`36`	`+index2--;`
	`37`	`+ }`
	`38`	`+`
	`39`	`+returnbld.reverse().toString();`
	`40`	`+ }`
	`41`	`+}`

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