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Update Tutorial.md

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Original file line number	Diff line number	Diff line change
`@@ -129,3 +129,19 @@ public void shuffleArray(int arr[]) {`
`129`	`129`	`Shuffle a Deck of cards`
`130`	`130`
`131`	`131`	`[Java Program](https://github.com/ankurjuneja/React-Java-Concepts/blob/master/src/ArraysAndStrings/Deck.java)`
	`132`	`+`
	`133`	`+Method to replace all spaces in a string with %20`
	`134`	+```
	`135`	`+public static String replaceSpaceWithPercent20(String str) {`
	`136`	`+ char[] charArray = str.toCharArray();`
	`137`	`+ StringBuilder sb = new StringBuilder();`
	`138`	`+ String percent20 = "%20";`
	`139`	`+ for(int i = 0; i < charArray.length-1; i++) {`
	`140`	`+ if(charArray[i] == ' ' && charArray[i+1] != ' ')`
	`141`	`+ sb.append(percent20);`
	`142`	`+ else`
	`143`	`+ sb.append(charArray[i]);`
	`144`	`+ }`
	`145`	`+ return sb.toString();`
	`146`	`+ }`
	`147`	+```

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