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Commit 52620f4

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Create Zero Array Transformation I.java
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‎Medium/Zero Array Transformation I.java

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class Solution {
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public boolean isZeroArray(int[] nums, int[][] queries) {
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int n = nums.length;
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int[] diff = new int[n + 1];
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for (int[] query : queries) {
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int left = query[0];
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int right = query[1];
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diff[left] += 1;
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diff[right + 1] -= 1;
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}
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int[] operation = new int[n + 1];
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int currOperation = 0;
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for (int i = 0; i < n + 1; i++) {
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currOperation += diff[i];
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operation[i] = currOperation;
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}
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for (int i = 0; i < n; i++) {
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if (operation[i] < nums[i]) {
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return false;
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}
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}
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return true;
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}
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}

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