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Merge pull requestneetcode-gh#2409 from Saiteja-Basam/master

Create 0303-range-sum-query-immutable.java

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	`1`	`+classNumArray {`
	`2`	`+`
	`3`	`+publicint[]arr;`
	`4`	`+publicNumArray(int[]nums) {`
	`5`	`+arr=nums;`
	`6`	`+for(inti=1;i<arr.length;i++){`
	`7`	`+arr[i]+=arr[i-1];`
	`8`	`+ }`
	`9`	`+ }`
	`10`	`+`
	`11`	`+publicintsumRange(intleft,intright) {`
	`12`	`+if(left==0){`
	`13`	`+returnarr[right];`
	`14`	`+ }`
	`15`	`+returnarr[right]-arr[left-1];`
	`16`	`+ }`
	`17`	`+}`
	`18`	`+`
	`19`	`+/**`
	`20`	`+ * Your NumArray object will be instantiated and called as such:`
	`21`	`+ * NumArray obj = new NumArray(nums);`
	`22`	`+ * int param_1 = obj.sumRange(left,right);`
	`23`	`+ */`

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