Improved tasks 2678, 2679, 2706, 2703, 2711

Author: javadev

src/main/java/g2601_2700/s2678_number_of_senior_citizens/Solution.java

@@ -1,16 +1,16 @@
 package g2601_2700.s2678_number_of_senior_citizens;
 
-// #Easy #Array #String #2023_09_11_Time_0_ms_(100.00%)_Space_40.7_MB_(97.65%)
+// #Easy #Array #String #2025_02_26_Time_0_ms_(100.00%)_Space_42.10_MB_(95.99%)
 
 public class Solution {
  public int countSeniors(String[] details) {
- int count = 0;
+ int seniorCitizen = 0;
  for (String detail : details) {
- if (((detail.charAt(11) - '0' == 6) && (detail.charAt(12) - '0' > 0))
-  || (detail.charAt(11) - '0' > 6)) {
- count++;
+ int age = (detail.charAt(11) - '0') * 10 + detail.charAt(12) - '0';
+ if (age > 60) {
+ seniorCitizen++;
  }
  }
- return count;
+ return seniorCitizen;
  }
 }

src/main/java/g2601_2700/s2679_sum_in_a_matrix/Solution.java

@@ -8,20 +8,17 @@
 public class Solution {
  public int matrixSum(int[][] nums) {
  int result = 0;
-
  for (int[] row : nums) {
  Arrays.sort(row);
  reverseArray(row);
  }
-
  for (int i = 0; i < nums[0].length; i++) {
  int max = 0;
  for (int[] num : nums) {
  max = Math.max(max, num[i]);
  }
  result += max;
  }
-
  return result;
  }
 

src/main/java/g2701_2800/s2703_return_length_of_arguments_passed/solution.ts

@@ -1,6 +1,8 @@
-// #Easy #2023_09_14_Time_49_ms_(86.01%)_Space_42.9_MB_(39.39%)
+// #Easy #2025_02_26_Time_50_ms_(82.03%)_Space_54.95_MB_(7.19%)
 
-function argumentsLength(...args: any[]): number {
+type JSONValue = null | boolean | number | string | JSONValue[] | { [key: string]: JSONValue };
+
+function argumentsLength(...args: JSONValue[]): number {
  return args.length
 }
 

src/main/java/g2701_2800/s2706_buy_two_chocolates/Solution.java

@@ -6,7 +6,6 @@ public class Solution {
  public int buyChoco(int[] prices, int money) {
  int minPrice1 = Integer.MAX_VALUE;
  int minPrice2 = Integer.MAX_VALUE;
-
  for (int price : prices) {
  if (price < minPrice1) {
  minPrice2 = minPrice1;
@@ -15,9 +14,7 @@ public int buyChoco(int[] prices, int money) {
  minPrice2 = price;
  }
  }
-
  int totalPrice = minPrice1 + minPrice2;
-
  if (totalPrice > money) {
  return money;
  } else {

src/main/java/g2701_2800/s2711_difference_of_number_of_distinct_values_on_diagonals/Solution.java

@@ -11,7 +11,6 @@ public int[][] differenceOfDistinctValues(int[][] grid) {
  int n = grid[0].length;
  int[][] arrTopLeft = new int[m][n];
  int[][] arrBotRight = new int[m][n];
-
  for (int i = m - 1; i >= 0; i--) {
  int c = 0;
  int r = i;
@@ -21,7 +20,6 @@ public int[][] differenceOfDistinctValues(int[][] grid) {
  set.add(grid[r++][c++]);
  }
  }
-
  for (int i = 1; i < n; i++) {
  int r = 0;
  int c = i;
@@ -31,7 +29,6 @@ public int[][] differenceOfDistinctValues(int[][] grid) {
  set.add(grid[r++][c++]);
  }
  }
-
  for (int i = 0; i < n; i++) {
  int r = m - 1;
  int c = i;
@@ -41,7 +38,6 @@ public int[][] differenceOfDistinctValues(int[][] grid) {
  set.add(grid[r--][c--]);
  }
  }
-
  for (int i = m - 1; i >= 0; i--) {
  int c = n - 1;
  int r = i;
@@ -51,14 +47,12 @@ public int[][] differenceOfDistinctValues(int[][] grid) {
  set.add(grid[r--][c--]);
  }
  }
-
  int[][] result = new int[m][n];
  for (int r = 0; r < m; r++) {
  for (int c = 0; c < n; c++) {
  result[r][c] = Math.abs(arrTopLeft[r][c] - arrBotRight[r][c]);
  }
  }
-
  return result;
  }