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RangeAddition.java

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/**

* https://leetcode.com/articles/range-addition/

*/

public class RangeAddition {

public int[] getModifiedArray(int length, int[][] updates) {

int[] res = new int[length];

for(int[] update : updates) {

int value = update[2];

int start = update[0];

int end = update[1];

res[start] += value;

if(end < length - 1)

res[end + 1] -= value;

}

int sum = 0;

for(int i = 0; i < length; i++) {

sum += res[i];

res[i] = sum;

}

return res;

}

}